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The table below shows the fourth roots of different numbers:


Number (x) 16 16 81 81
Fourth root of the number (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 boat for x hours is shown below:

f(x) = 32x + 75

What is the value of f(8) and what does f(8) represent? (5 points)

Respuesta :

sqdancefan
A. No. A function must be single-valued, meaning there can only be one value of y for any given x.

B. f(8) = 32*8 +75 = 331
Read the definition:
  f(8) is "the total cost in dollars for renting a boat for 8 hours"

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