Answer:
The answer is A
Step-by-step explanation:
Answer:
B or the third option you put.
Step-by-step explanation:
ΔABC ~ ΔADE
AC/AE = AB/AD
AC/(AC+15) = 8/18
18AC = 8(AC+15)
18AC = 8AC + 120
18AC - 8AC = 120
10AC = 120
AC = 120/10
AC = 12
2x^2+7x-5+(-8x^2-3x+5)=-6x^2+4x.
