Composition of Functions and Modeling Answers

The volume of air in a balloon is represented by the function , where r is the radius of the balloon, in inches. The radius of the balloon increases with time, in seconds, by the function .Write a composite function that can be used to determine the volume of the balloon after t seconds. Then, select the two true statements.When V is composed with r, the composite function is .When V is composed with r, the composite function is .V(r(6)) shows that the volume is 972π in.3 after 6 seconds.V(r(8)) shows that the volume is when the radius increases to 8 inches.The domain of V(t) is all real numbers.