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 truck for x hours is shown below: f(x) = 25x + 16 what is the value of f(20) and what does f(20) represent? (5 points)

The answer is 85

what r the choices

20 represents how many hours you can rent a truck for $516.

Step-by-step explanation:

Part A:

The table does not represent y as a function of x. In order for it to be a function, there has to be one input to be an output. For example, 16 has 2 output and 81 has 2 output. Therefore, it does not represent y as a function.

Part B:

f(x)=25x+16

f(20)=25(20)+16

f(20)=500+16

f(x)=516

20 represents how many hours you can rent a truck for $516.

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a.

step-by-step explanation:

step 1 distribute 2 to every term in the parentheses

step 2 add 10 on both sides of the equal sign