Practice!

Sample Problem

The ultimate frisbee team needs to buy jerseys, shorts, and hats for both its men’s team and women’s team. The women’s team needs 14 shorts, 30 jerseys, and 18 hats while the men’s team needs 16 shorts, 25 jerseys, and 20 hats. Each pair of shorts costs $20, each jersey costs $50, and each hat costs $15. Use a matrix to find the total cost of equipment for both the men’s team and the women’s team.

Women’s team $

Men’s team $

Solution

This matrix represents the number of items each team requires:

This matrix represents the cost of the items:

 =  =