CASI Pharmaceuticals Inc closed on August 20 at $8.02/share. On August 21, it closed at $7.77/share.

a) What is the net change?
(make sure to include a + or - sign)

b) What is the percent change to the nearest percent?

Maria is late for school sometimes because she is not a morning person. if maria is at school from 8: 00 a.m. to 3: 00 p.m. every day and volunteers at an animal shelter on the weekends, when would be the best time for her to study? a. before school b. right after school c. during the weekend d. before she goes to bed