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Shureka Washburn has scores of 79​, 69​, 61​, and 91 on her algebra tests. a. Use an inequality to find the scores she must make on the final exam to pass the course with an average of 75 or​ higher, given that the final exam counts as two tests. b. Explain the meaning of the answer to part​ (a).



Answer :

She must have a score greater than 75 in her final tests

What is the arithmetic mean?

Arithmetic mean is defined as the ratio of the sum of observations to the total number of observations. It can be referred to as the average of a specific set of data or the arithmetic mean.

Let the required score be x

Mean = 79 + 69 + 61 + 91 + x/5

⇒ 79 + 69 + 61 + 91 + x/5 > 75

⇒ 300 + x/5 > 75

⇒ 300 + x > 375

⇒ x > 375 - 300

⇒ x > 75

This implies that she needed a score on her final exams that were higher than 75.

Learn more about the arithmetic means here:

brainly.com/question/13000783

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