Let x = the minimum score needed to average 70:
70 = (64+63+73+x)/4
280 = 200 + x
Solve for x.
Jon C.
asked • 01/22/19PLEASE HELP ME PLEASE PLEASE
A student has scores of 64, 63, and 73 on his first three tests. He needs an average of at least 70 to earn a grade of C in the class. What is the minimum score that the student needs on the fourth test to ensure a C?
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