It takes 120 unit cubes to completely fill a rectangular prism. The prism is 10 unit cubes high. What are the other possible dimensions of the rectangular prism?

You will need 80 cubes to fill the prism.  

Step-by-step explanation: If each cube fills 1/8 of a cubic unit, 8 cubes will be required per cubic unit. Now all we must do is multiply 8 cubes by the amount of volume needed to fill (10 cubic units). Then we get 80 cubes to fill 10 cubic units.

if x decreases by 4 then y increases by 10

step-by-step explanation:

a is the correct