Final answer:
To evaluate the function f(x) = -5x + 10 at x = 5, you substitute 5 for x, resulting in f(5) = -25 + 10, which simplifies to -15.
Step-by-step explanation:
The student asks to evaluate the function f(x) = -5x + 10 when x equals 5. To find f(5), we substitute 5 into the equation in place of x. So, it would be calculated as follows:
f(5) = -5(5) + 10 = -25 + 10 = -15.
The value of the function f(x) at x = 5 is -15.