Question

1. sara teaches aerobics classes as a part - time job. the amount of money she earned is shown in the table below. based on the information in the table, how much money will sara earn after teaching 18 aerobics classes?

Explanation:

Step1: Find the rate per class

From the table, when the number of classes is \(4\), total earnings is \(\$50\). The rate per class \(r=\frac{50}{4} = 12.5\) dollars per class.

Step2: Calculate earnings for 18 classes

Using the formula \(Earnings=r\times number\ of\ classes\), with \(r = 12.5\) and \(number\ of\ classes=18\). Then \(Earnings=12.5\times18\)

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Answer:

\(225\)