A sample function is shown. function F(integer x) returns y; y = 4 * x - 8. What is returned for F(3)?

Rationale

Function F(3) returns 4.

To find the value returned by the function F when x is 3, we substitute 3 into the equation y = 4 * x - 8. This results in y = 4 * 3 - 8, which simplifies to y = 12 - 8, yielding a final result of 4.

A (-20) YOUR ANSWER

Substituting x = 3 into the function yields y = 4 * 3 - 8 = 12 - 8 = 4, not -20. The calculation does not support this choice, as it is far from the correct result.

B (-5) YOUR ANSWER

Using the same substitution, we find y = 4 * 3 - 8 = 12 - 8 = 4, which is significantly higher than -5. This choice indicates a misunderstanding of how to evaluate the function properly.

C (4) CORRECT

This choice correctly reflects the outcome of the function when x = 3. The calculation confirms y = 4 * 3 - 8 equals 4, making this the correct answer and demonstrating proper function evaluation.

D (12) YOUR ANSWER

If we incorrectly calculated y as simply 4 * 3, we would arrive at 12, but we must remember to include the -8 in the equation. Thus, this option represents a common error in overlooking the subtraction aspect of the function.

Conclusion

The function evaluation for F(3) yields a return value of 4 when correctly applying the formula y = 4 * x - 8. Each incorrect choice reflects a misunderstanding or miscalculation in the function evaluation process, underscoring the importance of careful arithmetic to arrive at the correct result.

A sample function is shown. function F(integer x) returns y; y = 4 * x - 8. What is returned for F(3)?

Function F(3) returns 4.

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