Be Prepared
Try It
ⓐ Since both equations are in standard form, using elimination will be most convenient. ⓑ Since one equation is already solved for x, using substitution will be most convenient.
ⓐ Since one equation is already solved for y, using substitution will be most convenient. ⓑ Since both equations are in standard form, using elimination will be most convenient.
Mark burned 11 calories for each minute of yoga and 7 calories for each minute of jumping jacks.
Erin burned 11 calories for each minute on the rowing machine and 5 calories for each minute of weight lifting.