Find the unit rate for the following data given in the following table:

15 dollars

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14 dollars

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13 dollars

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12 dollars

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Solution

The correct option is D 12 dollars
$Unit rate = \frac{R i s e}{R u n}$

$Slope (m) = \frac{144 - 60}{12 - 5}$

= $\frac{84}{7}$

= 12

Hence, earnings per hour is 12 dollars.

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