Answer: About $300
Explanation:
1. To solve this problem and estimate how much more money Mr. Johnson made this week (which you can call x) you must apply the proccedure shown below:
- Round the number of erasers sold:
96 erasers≈100 erasers
204 erasers≈200 erasers
- The amount of money made last week is:
![\$3*100=300\$](https://img.qammunity.org/2020/formulas/mathematics/middle-school/8pqrrh1ece4l3b4cslmssofu0w1h6fiwbl.png)
- The amount of money made this week is:
![\$3*200=600\$](https://img.qammunity.org/2020/formulas/mathematics/middle-school/unr0zy4pe8fxj7t5vo42acobjxx1plj5zh.png)
- Now, you must subtract the quantities shown above, then you obtain:
![m=\$600-\$300\\m=\$300](https://img.qammunity.org/2020/formulas/mathematics/middle-school/6e51q4coigtz2vqx54ogm3ndy5du3hfkzs.png)