Question

Will give medal. c:
The table below shows the outputs y for different inputs x:


Input
(x) 1 1 3 3
Output
(y) 4 2 12 6


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 paddleboat for x hours is shown below:

f(x) = 20 + 10x

What is the value of f(120), and what does f(120) represent?

Answer 1

part A; I would say no. for a given value of x there are 2 values for y
y = 2x and y = 4x if y was a function of x there would be only 1 value of y for a given value of x

Answer 2

part b; f(120) = 20 + 120(10) = 1220
The total cost in dollars, for renting a paddleboat for 120 hours

Answer 3

Thanks@! @triciaal