Question

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

@ElonaSushchik

Answer 2

A) y=f(x)=x^2
B)y=f(150)=20+3*150=20+450=470