Suppose an investment of $500 doubles in value every 15 years. How much is the investment worth after 30 years? After 45 years? Write an equation and solve

Step-by-step explanation:

well all you have to do is 500 dollars times two, because it times each 15 years right and 30/15=2. So you do $500*2 which is $1000. And you get $1500 in 45 yrs.

So the equations are for each 15 yrs you add 500 dollars to the amount.