The invested money by uncle Sammy = $2,300.
Uncle Sammy makes minimum percent = 7 %.
So, let us calculate the minimum amount Uncle Sammy can make to invest $2,300 at 7%.
7% of 2,300 = 0.07 * 2,300 = $161.
Uncle Sammy makes maximum percent = 13 %.
So, let us calculate the maximum amount Uncle Sammy can make to invest $2,300 at 13%.
13% of 2,300 = 0.13 * 2,300 = $299.
Therefore, the $161 - $299 is the range of money uncle Sammy will make if he invests his next paycheck of $2,300.