Combine like terms 3b + 7c + 2 - b + 2c - 7

If olu is twice as old as funmi if the sum of their ages is 60 how old is olu

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.

In july, the average temperature in one us city was 29°c. by december, the average temperature had fallen by 29°c. explain why the average temperature in december was 0°c.