The answer is "<span>the number of times the account compounds interest</span>".
The general formula is the following:
wherein r is the interest rate compound each four months.
Since there is 3*4 months in a year, then each year we compute the interest Three time, there where the factor 3 comes.
<em>i think it's just simply</em> y - 7 <em>?</em>
The formula for the area of a circle is pi*r^2. 3.14*16^2 = 803.84 centimeters squared