21. if there are 6 air conditioners and each require 8 pounds of refrigerant, how many pounds of
refrigerant are needed to fill all 6 air conditioners?

Marcus built a model car that is 4 inches wide. what scale was used to build the car if the actual width of the car is 6 feet? a. 1 in. = 2 ftb. 1 in. = 2.5 ftc. 1 in. = 1.5 ftd. 1 ft = 1.5 in.

Is the figure congruent? yes or no?

If f(x)=x+7 and g(x)=1/x what is (fog)(x)