40 ounces is 2.5 pounds because each pound is 16 ounces
15r means that she burns 15 calories per min, for as many mins as she ran. EG: if she ran for 10 min, then she burned 150 cals. The other one I'm not so sure.
The slope of the line is 2 if that is what you're looking for
A ratio that compares two quantities measured in different units is a conversion factor!
