Riley babysits for Marcus and she also babysits for Kelly. The table shows the number of hours Riley babysat for Marcus over a period of three months.

Babysitting Marcus |
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Month | Hours |
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April | 4 |

May | 6 |

June | 9 |

[math]*[/math]Riley expects the number of hours she will babysit Marcus to continue to increase in July.

[math]*[/math]Riley also expects that the ratio of the hours she babysits for Marcus to the hours she babysits for Kelly to be about [math]2:1[/math].

[math]*[/math]Riley earns an average babysitting fee of $6.00 per hour when babysitting for Marcus or Kelly.

Estimate Riley's total earnings, in dollars, for babysitting in July. Show all your work. Explain how you determined your estimate.

Enter your estimate, your work, and your explanation in the space provided.