If f(2)=13 which could be the equation for f(x)

Abouncy ball is dropped such that the height of its first bounce is 5.5 feet and each successive bounce is 64% of the previous bounce's height. what would be the height of the 7th bounce of the ball? round to the nearest tenth (if necessary).

What is the solution of sqrt x+2-15=-3

What is the solution set of the quadratic inequality x^2-5< or equal to 0