Answer:
f(x)= 5x^(2)-10x-120
$7
Step-by-step explanation:
70 / 10 = 7
intersection is /c,d/
circle the common members and list them
1 subract 6
2 add 8
3 add 11
4 subract 5
5 add 10
y=10x+5.5
this is the answer