Randy has 4 pennies , 3 nickels , and 3 dimes in his pocket if he randomly chooses 2 coins without replacement what is the probility they are both dimes.

1.) 2x + y = 3 2.) x - 2y = -1 if equation 1 is multiplied by 2 and then the equations are added, the result is a.3x = 2 b.3x = 5 c.5x = 5

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

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?