64 + 69 + 73 = 206
4 206 + x = 70
206 + x = 280
x = 74 **
** Andrew needs at least a 74% on the final exam.
Andrew needs to score at least 74 on his final exam to maintain an average of 70 and pass the course. This was calculated by determining the total score required for four tests and subtracting the sum of his current scores. By scoring 74 or higher, he will achieve the necessary average.
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