The human ear can distinguish sounds between 20 Hz and 20,000 Hz, inclusive. Write a compound inequality.

Someone please help me!!Whoever answers and is correct will be marked as brainliest! :)

You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below:

The final cost of a sale is determined by multiplying the price on the tag by 75%. which best describes the function that represents the situation?

Donald has x twenty-dollar bills and 11 ten-dollar bill. how much money does donald have? write your answer as an expression.