Answer:
5 in.
Step-by-step explanation:
If you can see, Triangle ABE has the side with 10 in. and 25 in. on the other side and Triangle FCD has one side with 15 inches, so the bottom one should be 5 in. because decreasing size.
A) 7x^2-7x+15
f(x) = 4x2 - 5x + 7,
g(x) = 3x2 - 2x + 8
f(x) +g(x) =
4x^2 - 5x + 7 + 3x^2 - 2x + 8=
7x^2-7x+15
