Question

NEED HELP QUICKLY PLEASE, WILL GIVE MEDAL.

The table below shows the squares of different numbers:


Number
(x) 2 -2 3 -3
Square of the number
(y) 4 4 9 9


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

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

f(x) = 20 + 3x

What is the value of f(150), and what does f(150) represent?

Answer 1

@dtan5457

Answer 2

part a yes y = f(x)
x independent for any value of x only one value for y
y = x^2

Answer 3

okay

Answer 4

do you know part B and C?

Answer 5

part B is not clear and I don't see a part C

Answer 6

first says f(x) the total cost then its asking the value of 150

Answer 7

okay. Part B we need to solve the Equation F(x) = 20 + 3x

Answer 8

so 150 = 20 + 3x to find x -20 from each side then divide by 3
this gives the number of hours

Answer 9

21?

Answer 10

if the total paid was 150
but if 150 is the number of hours then x = 150 and the amount paid will be 20 + 3*150

Answer 11

okay

Answer 12

470

Answer 13

what does Part C ask?

Answer 14

I just realized there is not part C I thought there was but it was just a sub section of part B, thank you for your help.

Answer 15

do you have time for another question?

Answer 16

do you understand the difference between f(x) = 150 and f(150)?

Answer 17

open a new post with the other ?

Answer 18

okay

Answer 19

f(x) = 150 vs f(150)
total cost paid vs 150 hours