Elisa used 2 1/2 cups of flour to make banana bread. when she finished, she still had 3 1/4 cups of flour. how much flour did she have before she made the bread?

The evening newspaper is delivered at a random time between 5: 30 and 6: 30 pm. dinner is at a random time between 6: 00 and 7: 00 pm. each spinner is spun 30 times and the newspaper arrived 19 times before dinner. determine the experimental probability of the newspaper arriving before dinner.