Question

The table below shows the square roots of different numbers:

Number
(x)
4 4 9 9
Square
root
(y) 2 -2 3 -3

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 car for a week and driving it x miles is shown below:

f(x) = 90 + 0.11x

What is the value of f(300), and what does f(300) represent? (5 points)