Question

PLEASE HELP!! TIMED QUESTION!!!!!

Answer 1

Answer:

$\large\boxed{B.\ a^2+2ah+h^2+3a+3h+5}$

Step-by-step explanation:

$f(x)=x^2+3x+5\\\\f(a+h)\to\text{substitute}\ x=a+h\ \text{to the equation:}\\\\f(a+h)=(a+h)^2+3(a+h)+5\\\\\text{Use}\ (x+y)^2=x^2+2xy+y^2\ \text{and the distributive property}\\\\f(a+h)=a^2+2ah+h^2+3a+3h+5$