Question

12. John must have at least 289 test points to pass his math class. He already has test scores of 72, 78, and 70. Which inequality will tell him at least how many more points he needs to pass the class? A. 72 + 78 + 70 + x ≤ 289 B. 72 + 78 + 70 + x > 289 C. 72 + 78 + 70 + x < 289 D. 72 + 78 + 70 + x ≥ 289

Answer 1

"At least" means he has to have 289 points or more. That is represented by the ≥ symbol.

The equation that will tell us "at least" how many more points he needs is:

72 + 78 + 70 + x ≥ 289
add on the left side of inequality

220 + x ≥ 289
subtract 220 from both sides

x ≥ 69

He would need at least 69 more points


ANSWER: (D) 72 + 78 + 70 + x ≥ 289

Hope this helps! :)