Answer:
"Multiply the previous value by 2"
Step-by-step explanation:
Let's check the first 2 terms for all the answer choices.
1. Add
to the previous value:

Doesn't match.
2. Subtract
from the previous value:

Doesn't match.
3. Divide the previous value by 2:

Doesn't match.
4. Multiply the previous value by 2:

DOES WORK!
Also, doing the same thing with all the other values would give us matching answer. So this choice is right.
The gcf of 15 and 10 is 5
After 5 years, value doubles.
Hence after 5 years, value is 250 x 2 = 500
After another 5 years, value doubles.
500 x 2 = 1000
Ans: $1000
Find the area of the circle then, multiply that by the height of the cylinder.
Area of a circle = PI x r^2
Area = PI x 8^2 = 64PI
Volume = 64PI x 11 = 704PI in^3
Shape B because a pentagon has 5 sides