Solve for h. b=hm i am not sure if this even has an answer?

Its worth 10000000 points need asap if you answer correctly ill mark brainliest

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.

Delbert keeps track of total of the total number of points he earns on homework assignments, each of which is worth 60 points. at the end of the semester he has 810 points. write an equation for delbert’s average homework score a in terms of the number of assignments n.