Question

Your math scores are 74, 78, 90, and 91. What is the lowest score you can earn on the next test and still achieve an average of at least an 88?

Answer 1

The  lowest score you can earn on the next test and still achieve an average of at least an 88 is 107

Mean of data

Mean is the average of numbers.

Mean = sum of data/sample size

Let the lowest score be "x" such that;

Mean = 74+78+90+91+x/5

88 =  74+78+90+91+x/5

88(5) = 74+78+90+91+x

440 = 74+78+90+91+x

440 = 333 + x

x = 440 - 333

x = 107

Hence the  lowest score you can earn on the next test and still achieve an average of at least an 88 is 107

Learn more on mean here: brainly.com/question/20118982

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