Start with parenthesis first.
so a+a+2a+48
Then add all like terms.
4a=48
Then solve for a by dividing 4 from 48.
a=12
Answer:
what graph?
Step-by-step explanation:
i cant help unless a see a screen shoot?
Answer: 
Step-by-step explanation:
1. To solve this problem you must use the following formula for calculate the volume of a right circular cylinder, which is shown below:

Where r is the radius and h is the height.
2. Now, you must substitute the values given in the problem. Therefore, you obtain the following result:


The first option reduces to 1 and the second one reduces to -1.