at what value of x does the minimum or maximum occur for the function below?
f(x)=-5(x+9)^2+8
a. minimum= 8
b. minimum at x=-9
c. maximum at x=8
d. maximum at x=-9
f(x)=-5(x+9)^2+8
a. minimum= 8
b. minimum at x=-9
c. maximum at x=8
d. maximum at x=-9