Lesson 11.4 Checkpoint Once you have completed the above problems and checked your solutions, complete the Lesson Checkp below. I Complete the Lesson Reflection above by circling your current understanding of the Learning Goal. Solve the linear system model by multiplying first. 1. A clothing store is having a sale on shirts and jeans. 4 shirts and 2 pairs of jeans cost $64. Three shirts a (4s +2j = 64 pairs of jeans cost $72. The system of equations (3s +31 = 72 models this situation, where s is the cos shirt and j is the cost of a pair of jeans. How much do one shirt and one pair of jeans cost?