The table below shows the cube roots of different numbers
Number(x) 8 27 64 125
Cube root(y) 2 3 4 5

Part A: Does the table represent y as a function of x? Justify your answer. (5 points)

Part B: The total cost f(x), in dollars, for renting a bike for x hours is shown below:

f(x) = 10 + 20x

What is the value of f(100), and what does f(100) represent? (5 points)

Question

The table below shows the cube roots of different numbers
Number(x)      8 27 64 125 
Cube root(y)   2  3   4    5 

Part A: Does the table represent y as a function of x? Justify your answer. (5 points)

Part B: The total cost f(x), in dollars, for renting a bike for x hours is shown below:

f(x) = 10 + 20x

What is the value of f(100), and what does f(100) represent? (5 points)

anonymous · Answer

for b I did 10 + 20x 
10+ 20(100)
10+2000
2010

anonymous · Answer

A.
Yes. y is a function of x if there are not two different y values for the same x value.
B.
10+ 20times100=2000+10=2010 
f(100) represents an x value to plug into the equation.

anonymous · Answer

good job!

anonymous · Answer

thanks for the help so quickly

anonymous · Answer

no problem. i just happened to see you question pop up after my question was answered, so I thought why not? Always happy to help a brudda out! (if you're a brudda. If you're not, it was good to help a sista out!)