Question

Renee needs to burn at least 300 calories at the gym today. She can burn 25 calories per minute on the treadmill (t) and 10 calories per minute on the elliptical trainer (e). 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 300 calories?

25t+10e > 300
-

25t- 10e > 300
-

25t+ 10e < 300
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25t - 10e < 300
-

Answer 1

B ?

Answer 2

25 on treadmill(t) = 25t
10 on elliptical trainer(e) = 10e
The key is where it says AT LEAST 300 calories burned, so:
\[25t + 10e \ge 300\]

Answer 3

so not b

Answer 4

ah gotcha :)