Michelle went on a hike she started at 6: 45am and returned at 3: 28pm. how long did she hike

Simplify.7x + 3y - 2 + 6x + 1 + y squared 2 you! ; )

Ricardo ran the 400 meter race 3 times his fastest time was 54.3 seconds his slowest time was 56.1 seconds if his average time was 55.0 seconds what was his time for the third race

Acircus act has 3 times as many elephants as acrobats. jorge noticed that all together there were 56 legs in the circus ring. how many elephants were in the show?