Awindow washer clean 38 windows in 2 hours at this rate how many windows did he clean in 7 hours?

Nnnnneeedd 1.find the residual if you know the actual number is 5.2 and the predicted value is 4.8

An unknown number of kids and buses are getting assigned. when assigning 4 kids to each bus, there are 2 kids that aren't placed in a bus. when assigning 8 kids to each bus, there are 2 empty buses. how many total kids are there?

What is 20+(5 x 2/5 )+ 3 show your work