Mary and lewis each open a savings account at the same time. mary invests $3,700 in an account yielding 3.2% simple interest, and lewis invests $3,000 in an account yielding 5.9% simple interest. after fifteen years, who has the greater total amount of money, and how much greater is it?

Lewis has greater total amount of money by 179 dollar.

Step-by-step explanation:

The formula for Simple Interest is:   , where Amount of interest earned, Principal amount, Rate of interest in decimal form and time duration

Mary invests $3,700 in an account yielding 3.2% simple interest for 15 years.

So, the amount of interest will be:   dollar.

Thus, the total amount of money for Mary will be:  

Now, Lewis invests $3,000 in an account yielding 5.9% simple interest for 15 years.

So, the amount of interest will be:   dollar.

Thus, the total amount of money for Lewis will be:  

Now,  (5655 - 5476) dollar = 179 dollar.

So, Lewis has greater total amount of money by 179 dollar.

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80

they can both be solutions depends on the equation

step-by-step explanation:

what is the equation? ?