Question

Connie needs to burn at least 350 calories at the gym today. She can burn 25 calories per minute on the treadmill and 10 calories per minute on the elliptical trainer. Which inequality below can be used to find the possible combinations of time she could spend on each machine and still meet her goal of burning at least 350 calories?

25t - 10e greater than or = to 350

25t + 10e less than or = to 350

25t - 10e less than or = to 350

25t + 10e greater than or = to 350

Answer 1

i think the clue is in "at least" 350 calories
therefore the solution must satisfy 25 * mins on trainer + 10 * mins on elliptical >= 350 calories

=> 25t + 10e greater than or = to 350