Please solve number 15 and 16, i know that the answers are 42° and 18° but I need to know how to get to that answer. If the answer is correct I will give brainliest. Thank you.

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).

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.

Which equation represents the function on the graph?