Terry eight 1/ third of the leftover pie. How much pie did she eat?

Pam buys a sleeve of ball bearings for her skateboard. each of the bearings is 1 1/5 inches wide. the sleeve is 9 3/5 inches long. how many ball bearings are in the sleeve? show your work.

Solve 2x+y=3 x+y=5 in substitution method

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?