Answer:
50
Step-by-step explanation:
just look at the segment in common
25×2=50
Weird that the only choices are given as integrals with respect to

. (Integration along the

axis would be way easier, but whatever)
The fourth option should do it.
Answer:
It's C.7
Step-by-step explanation:
Use the foil method
90-7x3
90-21=69
Ther you go have a great day
Hello,
Please, see the detailed answer in the attached files.
Thanks.