Source:New SAT Study GuideSAT Study Guide Explanations, Test 2; Test 2, Section 4; #9

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A worker uses a forklift to move boxes that weigh either 40 pounds or 65 pounds each...

A worker uses a forklift to move boxes that weigh either 40 pounds or 65 pounds each. Let x be the number of 40-pound boxes and y be the number of 65-pound boxes. The forklift can carry up to either 45 boxes ora weight of 2,400 pounds. Which of the following systems of inequalities represents this relationship?