Answer:
![\boxed {\boxed {\sf \$54.80}}](https://img.qammunity.org/2022/formulas/mathematics/high-school/oca45im9a2x0wzso99ne46g046g1dr662z.png)
Explanation:
Chris earns the commission on the jewelery sales. To calculate what he earned, multiply the commission rate and his sales.
![commission= commission \ rate * sales](https://img.qammunity.org/2022/formulas/mathematics/high-school/r3chktd0z0ab8eujt9zyp8ia3jlylo89xh.png)
His rate is 4% and his sales are $1,370
![commission= 4\% * \$1370](https://img.qammunity.org/2022/formulas/mathematics/high-school/mgsfawxkt9dzhhi5bwbbn6vbsndatfsbh4.png)
Convert the percent to a decimal. Divide by 100 or move the decimal two spots to the left.
- 4/100= 0.04
- 4.0 --> 0.4 --> 0.04
![commission= 0.04* $1370](https://img.qammunity.org/2022/formulas/mathematics/high-school/tsw8m7ogmq2p7ct09xf2w0z4vplzsm0uea.png)
![commission = \$ 54.8](https://img.qammunity.org/2022/formulas/mathematics/high-school/n3rgc6w6ivr4x6h18v4rjs3raera22d3gx.png)
Chris's commission is $54.80