adanced algebra
posted by kj on .
how long will it take to make $9944. dollars at 1.25 interest when i already have $7500. I have to make line graph of each year.

if interest is simple,
7500(1+.0125x) = 9944
x = 26 years
If compound annual interest,
7500(1+.0125)^x = 9944
x = 22.7
The graph for simple interest is just a straight line.
The graph for compound interest is a curve which gets steeper and steeper. Figure the balance after each year and plot the points, then draw the line segments.