What is f(1) given f(x) = 2x + 3?

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What is f(1) given f(x) = 2x + 3?

Evaluating a function at a specific input means substituting that input into the function’s formula. For f(x) = 2x + 3, plug in x = 1: f(1) = 2(1) + 3 = 2 + 3 = 5. So the function outputs 5 when the input is 1. This result follows directly from the rule 2x + 3, and the arithmetic is straightforward, so 5 is the correct value.

Evaluating a function at a specific input means substituting that input into the function’s formula. For f(x) = 2x + 3, plug in x = 1: f(1) = 2(1) + 3 = 2 + 3 = 5. So the function outputs 5 when the input is 1. This result follows directly from the rule 2x + 3, and the arithmetic is straightforward, so 5 is the correct value.

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