Suppose a video store charges nonmembers $4 to rent each video. A store membership costs $21 and members pay only $2.50 to rent each video. How many videos would one need to rent to justify purchasing a membership?

Question

Suppose a video store charges nonmembers $4 to rent each video.  A store membership costs $21 and members pay only $2.50 to rent each video.  How many videos would one need to rent to justify purchasing a membership?

PsyDAG · Answer

Let x = number of videos 21 + 2.5x ≤ 4x Solve for x.

Anonymous · Answer

14=X