A recipe for 1 lb of trail mix calls for 3.2 oz of cashews.
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For this problem, we can refer to the slope formula . This describes the rise over run, change in x over y. We know that the y axis represents the dependent variable and that the x axis represents the independent variable. To put this in the equation, note the use of the word 'per' in this question. If she earns 5 dollars per hour of babysitting, then this means that the amount she earns depends on the number of hours she works. To put this numerically:
Think of the line that separates the dividend and divisor as the word 'per'. The slope of this line would be 5x, since y increases by five every time x increases by one. This means that your slope is .
We are still not completely finished. Notice the fact that she is paid an additional $3 for her transportation. This means that the y value for this line does not start out from 0. Before working any hours at all, there were 3 dollars, which is called the equation's y intercept. Your complete equation will be:
Now that it's complete, all there's left to do is plug in the values for hours worked.
3 hours:
-->
--->
She will earn $18 dollars for 3 hours.
8 hours:
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--->
She will earn $43 in 8 hours.
Hope this helped.