In May, the number of students living in the dormitory was 80. By June the number was down to 48, a decrease of 32. What is the percent of change?​

3. solve by graphing: y = 2x + 6 x + y = -3

Two friends are reading books. jimmy reads a book with 21,356 words. his friend bob reads a book with one-and-a-half times as many words. which expression represents the number of words bob reads?

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?