N + 2d =1
This is the system of equations because it is 2 times more than nickels
if we divide 20 by 12, we get a quotient of 1, and a remainder of 8.

First round 15.25 to 15.30 and round 4.85 to 4.90 and then add you get 21.20 no it is not reasonable and you round to the decimal ones
Let's start with saying he earned 2766.79. He he also earns 9% of his sales.
9% of something is just .09 multiplied by that something. So if he earns 9% of 3743.37 plus the 2766.79, then we can say
y= 0.09 * 3743.37 + 2766.79
y = 3,103.69