3. Malachi works out on a stair-stepping machine.
A) If he has burned
250 calories, how long
has he been on the
stair-stepper?
Minutes on
the stair
stepper
0
30
60
90
Total
Calories
Burned
0
250
500
750
B) If Malachi is on the stair-stepper for 90 minutes
what will be the amount of total calories burned?