Question

Function Notations

Answer 1

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


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?

Answer 2

@myininaya @phi

Answer 3

@mathmate @Luigi0210 @surjithayer

Answer 4

What do you think for Part A and B?

Answer 5

Do you think y is a function of x for Part A?

Answer 6

Part A: I think that y isn't a function of x because x repeats itself

Answer 7

Part B: The value of f(300) is 123. f(300) represents the total cost in dollars

Answer 8

@dan815 Can u check my answers?