Answer:
7
Step-by-step explanation:
We need to plug in -1 for x. Here's what we get:
multiplying two negative numbers gives us a positive number

= 7
The volume of a sphere is given by the equation
, where V is the volume and r is the radius.
To answer this question, simply plug the correct values into the equation:

The volume of the air in the balloon is about 113.0976 in3.
Hope this helps!!
I think 15 is the answer I’m not sure tho