Agirl walks into a store and steals 100 dollars and leaves. she then comes back and uses the same 100 dollar bill to buy 70 dollars worth of merchandise , the cashier gives her 30 dollars as change . how much money does the store lose ?

Mallory has been offers two different jobs. she can baby sit for 6 hours a week and get $8.50 an hour. or she can work at the library for 14 hours a week and make $5.50 an hour. which job will allow her to save the most money after 6weeks?