For finding the amount of outcomes in a 3 question quiz with four answers per quiz, I put 64. I got this by multiplying 4×4×4, and I just want to make sure my logic is sound.

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).

60 2(x + 2) in the diagram, gef and hef are congruent. what is the value of x?

Pls never taught i’m really confused and i rlly need