Answer:
A. h^2+9h+23
Step-by-step explanation:
F(x) = x^2 +3x + 5.
For f( 3+h), put x = 3+h.
F( 3+h)= (3+h) ^2 + 3 (3+h) +5 = 9 +h^2 + 6h + 9 + 3h + 5 = h^2 + 9h + 23.
