SOME ONE HELP ME please:/ ITS KINDA EASY BUT I NEED STEP BY STEP PLEASEEE

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

The candy store is having a 30% off sale. emma is going to buy $7.50 worth of candy.how much will she pay after the discount

The function c(n) below relates the number of bushels of apples picked at a pick-your-own orchard to the final cost for the apples. it takes as input the number of bushels of apples picked after paying an entry fee to an orchard and returns as output and returns as output the cost of the apples (in dollars)c(n) = 15n + 30which equation below represents the inverse function n(c), which takes the cost of the apples as input and returns the number of bushels picked as output