Answer:
f(3) = 10
Step-by-step explanation:
f(x)=-x^2+19
Let x= 3
f(x)=- (3)^2+19
= -9 + 19
= 10
Answer: f(3) = 10
f(x) = -x^2 + 19
Now, the value of x would be 3
f(x)= - (3) squared 2 plus 19
-9 + 19 = 10
