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5 votes
Given f(x) = 5x + 7; find f(8).

A. 12
B. 27
C. 39
D. 47

User Leon Segal
by
7.4k points

1 Answer

5 votes

Final answer:

To evaluate the function f(x) = 5x + 7 at x = 8, substitute 8 into the equation to get f(8) = 5(8) + 7, which simplifies to f(8) = 47. Hence, the answer is D. 47.

Step-by-step explanation:

To find f(8) given f(x) = 5x + 7, we simply substitute x with 8 in the equation and perform the calculation:


f(8) = 5(8) + 7


f(8) = 40 + 7


f(8) = 47


Therefore, the correct answer is D. 47. This process is known as Function Evaluation, which involves finding the output of a function given a specific input.

User Marcos Abreu
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8.2k points

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