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)