The table below shows the fifth powers of different numbers:
Number (x) 1 −1 2 −2
Fifth power of the number (y) 1 −1 32 −32
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 bowling lane for x hours is shown below:
f(x) = 2x + 12
What is the value of f(4) and what does f(4) represent? (5 points)