For the expression 14-14t to have a negative value, what must be true about the value of t? choose the correct answer. A. The value of t has to be less than 1.
B. The value of t has to be 0.
C. The value of t has to be greater than 1.
D. The value of t has to be negative.

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?