PLEASE HELP MEE 1616,

What is the value of f in the equation 7f-1=6​

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).

Combine the information in the problem and the chart using the average balance method to solve the problem.

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16