Pauline withdrew $7.50 from her savings account every day for 3 days. Which expression is the best choice to help her determine the total amount of money she withdrew? (5 points) (7.50)(−3) = −22.50; she withdrew $22.50
(−7.50)(3) = −22.50; she withdrew $22.50
(−7.50)(−3) = 22.50; she withdrew $22.50
(7.50)(3) = 22.50; she withdrew $22.50

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer

Standard deviation of 19,29,21,22,23

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling