3. Write an exponential equation for each coin that will give the coin's value, V, at any time, t. Use the formula: V(t)=P(1 + r)^t is the value of the coin in t years, P is the initial investment, and r is the growth rate. For each coins that you selected, identify P and r, then set up the equation to find the value of the coin at any t. Alex has found 3 coins to chose from Coin A, Coin B, and Coin C. You chose Coin A and Coin C. Coin A is worth $25 and will increase in value at the rate of 7% each year. Coin C is worth $60 and will increase in value at the rate of 4% each year.