Mary decreased her time for the mile walk from 30 minutes to 24 minutes. What was the percent of decrease? A. 32%
B. 20% increase
C. 20% decrease
D 88%

Tom travels between the two mile markers shown and then finds his average speed in miles per hour. select the three equations that represent this situation.

You just purchased two coins at a price of $670 each. because one of the coins is more collectible, you believe that its value will increase at a rate of 7.1 percent per year, while you believe the second coin will only increase at 6.5 percent per year. if you are correct, how much more will the first coin be worth in 15 years?

Imade a beaded necklace that was 2/6 blue, 3/5 green and the rest were white. did the necklace have more blue or green how many white beads did it have.