Question

A business manufactures at least five MP3 players for each digital video player. The total number of MP3 players and digital video players must be less than 70. Shade the region that represents the number of MP3 players M and digital video players V that can be produced within these restrictions. Put V on the horizontal axis.

Answer 1

From the problem, we have the following inequalities and conditions:
M ≥ 5
M + V < 70

The first inequality results to a solid horizontal line at M = 5 and all values above that.

The second inequality can be rearranged to:
V < -M + 70
This inequality results to all the values under the line V = -M + 70