The ratio of the lengths of the sides of △abc is 2: 3: 4. points m, n, and k are the midpoints of the sides. perimeter of △mnk equals 7.2 in. find the length of the sides of △abc.

The dance committee of pine bluff middle school earns $72 from a bake sale and will earn $4 for each ticket they sell to the spring fling dance. the dance will cost $400 write an inequality to determine the number, t of tickets the committee could sell to have money left over after they pay for this year's dance. what is the solution set of the inequality?