Answer:
x²+8x+15
doing middle term factorization
x²+5x+3x+15
x(x+5)+3(x+5)
(x+5)(x+2) is your answer
No, I do not agree.
one bat hous holds about 3000 bats => 300 bats / house
So, to estimate the number of bats holded by 12 bat houses do>
300 bat / house * 12 house = 3600 bats
That is very far from the 4500 bats that Larry says.