Your little sister wants to have a lemonade stand this summer. she has decided to sell
each glass of lemonade for $0.25. you her determine the cost to make each glass
of lemonade to be about $0.10. mom takes her to the store and buys $15 worth of
supplies to get started. how many glasses of lemonade must she sell to break even?
(she has to pay mom back for the supplies.) show your