Answer:
[tex]\boxed {\tt f(3)= 10}[/tex]
Step-by-step explanation:
We are given the function:
[tex]f(x)= -x^2+19[/tex]
We want to find f(3), therefore we must substitute 3 in for x.
[tex]f(3)= -(3)^2+19[/tex]
Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction. Evaluate the exponent.
[tex]f(3)= -(9)+19[/tex]
[tex]f(3)=-9+19[/tex]
Add 19 to -9.
[tex]f(3)= 10[/tex]
For the function f(x)=-x²+19, f(3)= 10
