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Graphical
For the following exercises, find the inverse of the function and graph both the function and its inverse.
For the following exercises, use a graph to help determine the domain of the functions.
Technology
For the following exercises, use a calculator to graph the function. Then, using the graph, give three points on the graph of the inverse with
y -coordinates given.
Extensions
For the following exercises, find the inverse of the functions with
positive real numbers.
Real-world applications
For the following exercises, determine the function described and then use it to answer the question.
An object dropped from a height of 200 meters has a height,
in meters after
seconds have lapsed, such that
Express
as a function of height,
and find the time to reach a height of 50 meters.
5.53 seconds
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An object dropped from a height of 600 feet has a height,
in feet after
seconds have elapsed, such that
Express
as a function of height
and find the time to reach a height of 400 feet.
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The volume,
of a sphere in terms of its radius,
is given by
Express
as a function of
and find the radius of a sphere with volume of 200 cubic feet.
3.63 feet
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The surface area,
of a sphere in terms of its radius,
is given by
Express
as a function of
and find the radius of a sphere with a surface area of 1000 square inches.
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A container holds 100 mL of a solution that is 25 mL acid. If
mL of a solution that is 60% acid is added, the function
gives the concentration,
as a function of the number of mL added,
Express
as a function of
and determine the number of mL that need to be added to have a solution that is 50% acid.
250 mL
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The period
in seconds, of a simple pendulum as a function of its length
in feet, is given by
. Express
as a function of
and determine the length of a pendulum with period of 2 seconds.
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The volume of a cylinder ,
in terms of radius,
and height,
is given by
If a cylinder has a height of 6 meters, express the radius as a function of
and find the radius of a cylinder with volume of 300 cubic meters.
3.99 meters
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The surface area,
of a cylinder in terms of its radius,
and height,
is given by
If the height of the cylinder is 4 feet, express the radius as a function of
and find the radius if the surface area is 200 square feet.
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The volume of a right circular cone,
in terms of its radius,
and its height,
is given by
Express
in terms of
if the height of the cone is 12 feet and find the radius of a cone with volume of 50 cubic inches.
1.99 inches
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Questions & Answers
If auger is pair are the roots of equation x2+5x-3=0
Wayne and Dennis like to ride the bike path from Riverside Park to the beach. Dennis’s speed is seven miles per hour faster than Wayne’s speed, so it takes Wayne 2 hours to ride to the beach while it takes Dennis 1.5 hours for the ride. Find the speed of both bikers.
from theory: distance [miles] = speed [mph] × time [hours]
info #1
speed_Dennis × 1.5 = speed_Wayne × 2
=> speed_Wayne = 0.75 × speed_Dennis (i)
info #2
speed_Dennis = speed_Wayne + 7 [mph] (ii)
use (i) in (ii) => [...]
speed_Dennis = 28 mph
speed_Wayne = 21 mph
George
Let W be Wayne's speed in miles per hour and D be Dennis's speed in miles per hour. We know that W + 7 = D and W * 2 = D * 1.5.
Substituting the first equation into the second:
W * 2 = (W + 7) * 1.5
W * 2 = W * 1.5 + 7 * 1.5
0.5 * W = 7 * 1.5
W = 7 * 3 or 21
W is 21
D = W + 7
D = 21 + 7
D = 28
Salma
Devon is 32 32 years older than his son, Milan. The sum of both their ages is 54 54. Using the variables d d and m m to represent the ages of Devon and Milan, respectively, write a system of equations to describe this situation. Enter the equations below, separated by a comma.
find product (-6m+6) ( 3m²+4m-3)
what is the solution
bill
how did you arrive at this answer?
bill
i really want to learn
Amira
I only got 42 the rest i don't know how to solve it. Please i need help from anyone to help me improve my solving mathematics please
Amira
Hw did u arrive to this answer.
Aphelele
-6m(3mA²+4m-3)+6(3mA²+4m-3)
=-18m²A²-24m²+18m+18mA²+24m-18
Rearrange like items
-18m²A²-24m²+42m+18A²-18
Salma
complete the table of valuesfor each given equatio then graph.
1.x+2y=3
given that (7x-5):(2+4x)=8:7find the value of x
Nandala
please why isn't that the 0is in ten thousand place
please why is it that the 0is in the place of ten thousand
Grace
Send the example to me here and let me see
Stephen
A meditation garden is in the shape of a right triangle, with one leg 7 feet. The length of the hypotenuse is one more than the length of one of the other legs. Find the lengths of the hypotenuse and the other leg
state in which quadrant or on which axis each of the following angles given measure. in standard position would lie 89°
I am eliacin, I need your help in maths
Rood
hmm can we speak here?
Amoon
however, may I ask you some questions about Algarba?
Amoon
what the last part of the problem mean?
Roger
The Jones family took a 15 mile canoe ride down the Indian River in three hours. After lunch, the return trip back up the river took five hours. Find the rate, in mph, of the canoe in still water and the rate of the current.
Shakir works at a computer store. His weekly pay will be either a fixed amount, $925, or $500 plus 12% of his total sales. How much should his total sales be for his variable pay option to exceed the fixed amount of $925.
I'm guessing, but it's somewhere around $4335.00 I think
Lewis
12% of sales will need to exceed 925 - 500, or 425 to exceed fixed amount option. What amount of sales does that equal? 425 ÷ (12÷100) = 3541.67. So the answer is sales greater than 3541.67.
Check:
Sales = 3542
Commission 12%=425.04
Pay = 500 + 425.04 = 925.04.
925.04 > 925.00
Munster
difference between rational and irrational numbers
When traveling to Great Britain, Bethany exchanged $602 US dollars into £515 British pounds. How many pounds did she receive for each US dollar?
how to reduced echelon form
Jazmine trained for 3 hours on Saturday. She ran 8 miles and then biked 24 miles. Her biking speed is 4 mph faster than her running speed. What is her running speed?
d=r×t
the equation would be 8/r+24/r+4=3
worked out
Sheirtina
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Source:
OpenStax, Algebra and trigonometry. OpenStax CNX. Nov 14, 2016 Download for free at https://legacy.cnx.org/content/col11758/1.6
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