Answer:
[tex]f(3) = 16[/tex]
Step-by-step explanation:
Step 1: Set x to 3
[tex]f(x) = x^2+7[/tex]
[tex]f(3) = (3)^2 + 7[/tex]
[tex]f(3) = (9) + 7[/tex]
Answer: [tex]f(3) = 16[/tex]