Answer:
$507.30
Step-by-step explanation:
-Given the monthly deposits are $425 and the interest rate is 3.5% for 30 years.
-The amount of the investment after 30 years is calculated as;

-Assuming Saul started saving at age 20, his investment term will be 40 yrs.
-His investment amount is thus:

#We subtract to find how much more he would have if he started saving at 20;

Hence, Saul would have $507.30 more had he started saving 10 years earlier.
We have to use the Distributive Property in this equation.
By the Distributive Property,

becomes

Now we need to isolate x. Remember PEMDAS?


Simplify the right side.

Answer:
0.77777778
Step-by-step explanation: