Answer:
-25
Step-by-step explanation:
-81=7k+19=3k
7k-3k=-19-81
4k=-100
k=-25
Answer:
might be 3
Step-by-step explanation:
Answer: the answer would be 66
Step-by-step explanation:
The angles would be vertical because they're made by two lines and have equal value.
Answer:
C 5a^2 +70a +240
Step-by-step explanation:
We have given these following functions:

h(a+4)
This function is:



f[h(a+4)]

Thus

The correct answer is given by option C.