Mary ran a 5 kilometer race in 45 minutes. Melanie ran the 2 kilometer race in 17 minutes. Which runner ran the faster race? What was that rate per hour?

At the beginning of the month, alexa’s bank account contained $4329.97. she then made two deposits of $452.28 each and a withdrawal of $279.34. she then went to the store and bought the new iphone x for $1,015 plus 6% sales tax. how much money does she have in her account now?