Answer:
seven (7)
Step-by-step explanation:
you are give 7 + 4 + [tex]f^{2}[/tex] - 5f + 2
if f = 3 you have to fill in 3 for all of the f's
7 + 4 + [tex]3^{2}[/tex] - 5(3) + 2
Use PEMDAS
No parenthesis so do exponents first
3^2 = 9
7 + 4 + 9 - 5(3) + 2
Multiplication
-5 × 3 = -15
7 + 4 + 9 - 15 + 2
add all this up
you are left with 7
hope this helps :)
