Write "fourteen seven tenths squared in all three forms

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 length of the missing leg in this right triangle? 18 mm 24 mm 26 mm 32 mm

Me. i can't figure out this question. give an explanation too. .