The rain caused the river to rise a total of 6 2/3 inches. the river was rising at an average of 2/3 of an inch each hour. how many hours did it rain?

With alll of except for the 2 that i did already

Asunflower was 20 1/2 inches tall. over the next 6 months, it grew to a height of 37 inches tall. what was the average yearly growth rate of the height of the sunflower? ? plz write a proportion to solve i will give you 100 points

Evan walked 5/8 mile to his friends house. then together they walked 7/12 mile to the movie theatre. which pair of fraction can evan use to find how far he walked in all?