For the function f(x) = 3x - 8, what is f(7)?

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Multiple Choice

For the function f(x) = 3x - 8, what is f(7)?

Explanation:
Evaluating a function at a specific input means substituting that value for x in the expression and simplifying. For f(x) = 3x - 8, you replace x with 7: 3(7) - 8. Multiply 3 by 7 to get 21, then subtract 8 to get 13. So f(7) equals 13. This shows how the function processes inputs: multiply by 3 and then subtract 8. If you forget the subtraction, you’d get 21, which is the result of applying only the multiplication part.

Evaluating a function at a specific input means substituting that value for x in the expression and simplifying. For f(x) = 3x - 8, you replace x with 7: 3(7) - 8. Multiply 3 by 7 to get 21, then subtract 8 to get 13. So f(7) equals 13. This shows how the function processes inputs: multiply by 3 and then subtract 8. If you forget the subtraction, you’d get 21, which is the result of applying only the multiplication part.

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