A Balloon That Originally Holds 13 $V ( t )$ Represent the Volume, in Cubic Inches, of Air in the Springs

Multiple Choice

A balloon that originally holds 13.6 cubic inches of air springs a leak. Let $V ( t )$ represent the volume, in cubic inches, of air in the balloon minutes after the balloon starts to leak air. The average rate
Of change of $V$ is $- 1.02$ cubic inches per minute. Use these facts to estimate $V ( 7 )$ .

A) 13.6 cubic inches
B) 20.74 cubic inches
C) 12.59 cubic inches
D) none of the above