Solve the linear inequality. Other than ∅, use interval notation to express the solution set and graph the solution set
on a number line.
-Claire has received scores of 85, 88, 87, and 90 on her algebra tests. What score must she receive on the fifth test to have an overall test score average of at least 87?
A) 85 or greater
B) 86 or greater
C) 84 or greater
D) 83 or greater

Question

Quizplus · Accepted Answer

To find the minimum score Claire needs on her fifth test to have an average of at least 87, we calculate the total points she needs across all tests: $87 \times 5 = 435$. She has already scored $85 + 88 + 87 + 90 = 350$ points. Subtracting this from 435 gives $435 - 350 = 85$. Therefore, she needs a score of at least 85 on her fifth test.

Solve the Linear Inequality