The temperature in my apartment measured 72 degrees on Friday. I went out of town and accidentally left the window open over the weekend. The temperature in the apartment measured 59 degrees on Monday. What was the change in temperature between Friday and Monday.

the given 6 = w/p is equivalent to 6p = w, where w is the total area of the walls and p is the area covered by a single can of paint.

knowing that 6 cans of paint will be needed, 6p = w becomes 6(6) = w = 36.   this tells us that the total area to be painted is 36 square units.

a) is $10.34

b) is 6 toppings