Since it says less than, the 5 would be the second part of the expression
= 3L - 5
in 15 hours Alexandra makes 7.5 boxes. how many boxes can she make in one hour?
so 15 hours=7.5 boxes
divide both sides by 15 to get hours
1 hour=7.5/15
answer is 1 hour=0.5 boxes
hope this helped you :)
3x^-2 can be written
3/x^2 because x^-2 is = 1/x^2