Question: Problems 7786 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind
Problems 77–86 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final exam.

Find the value of x 3xy + 2 5x - 2y if x = 4 and y = 7.
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