Question 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, where V(t) is the value of coins in t years, P is the initial investment, and r is the growth rate. For each of the coins you selected , identify P and r , then set up an equation to find the value of coin at any t. Question 5: Find the value of the coins after 10,20,30, and 60 years. Use the function you identified in question 3 to calculate the value. ( 8 points: 1 point each time interval) Question 6: Which Coin is more valuable after 10 years ? 20 years? 30 years? 60 years? Which coin would you purchase if you intended to keep longer than 60 years , and why? ( Hint look at r.)