642 muffins sold cost 153.21. 2.31 dozen chocolate, 4.52 1.5 dozen banana , carmel 7.66 per 2.5 dozen. how many orders of each did they sell?

4+(2+x) can you me solve this problem

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *

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