Mandy earns money based on how many hours she works. The following table shows Mandy's earnings.
| | ||
- | :-: | :-:| :-:| :-:
Hours | $1$ | $2$| $3$
Earnings | $\$10$ | $\$20$ | $\$30$
**Plot the ordered pairs from the table.**
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**Are Mandy's earnings proportional to the number of hours that she works?**
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