Answered

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. (5 points)


Part B: The total cost f(x), in dollars, for renting a paddle boat for x hours is shown below:


f(x) = 20 + 10x


What is the value of f(120), and what does f(120) represent? (5 points)

Verified Answer :

Athis is not a function because x=1 has 2 outputs So does x=3

B . f(120) = 20 + 10*120 = 1220

This is the cost in dollars of renting a boat for 120 hours.


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