Respuesta :
Answer:
f(7) = 14
Step-by-step explanation:
So we are given the equation:
f(x) = -x² + 9x
and we are asked to find f(7). To find f(7), we have to plug in 7 for x into the equation for f(x).
f(7) = -(7)² + 9(7) = -49 + 63 = 14
So f(7) = 14.
I hope you find my answer and explanation to be helpful. Happy studying.