Question

yvette has scores of 72 78 66 and 81 on her algebra tests. What score must she make on the final exam in order to pass the course with at least 360 points. The final exam counts as two tests grades

Answer 1

Explanation:

Add all the test scores 72 + 78 + 66 + 81 = 297 plus 2 unknown test scores equals 2x

Use the greater than or equal to sign which means "at least"

2x + 297 ≥ 360

2x ≥ 360 - 297

2x/2 ≥ 63/2

x ≥ 31.5

Plug in 31.5 into the original equation

2x + 297 ≥ 360

2(31.5) + 297 ≥ 360

63 + 297 ≥ 360

360 ≥ 360

360 is greater than or equal to 360 … therefore..

The Score she can make on the final exam in order to pass the course with at least 360 points

should be at least 31.5

Answer 2

72+28+66+81=297
360-297=63
She would need to score 63 on her last exam.