Which expression represents the phrase "twice the difference of a number and 5"? a) 2+2(x−5) b) −5+2x c) 2(x+5) d) 2(x−5)

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).

If you answer right ill give brainliest, : )

Sole with work in 10 years, the average number of hours of tv watched per week by teenagers dropped from 23.9 to 21.4. find the percent of change.