X^2+y^2-4x=0 change to polar coordinates

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

Abouncy ball is released from a certain height. on the first bounce, it travels 32cm. with each subsequent bounce, it travels 9/10 the distance of the previous bounce. what is the total distance that the ball has traveled when it completes its 25th bounce?

Describe a situation that you could represent with the inequality x< 17