You take how many shirts she sold and then multiply it by the cost of one shirt.
Therefore, you do 39 shirts * $16.50, which is equal to $643.50 in revenue :)
The last step you need to do is 5.25+0.03, because you took away 0.03 more than what the question asked so you need to add the 0.03 back, which gets you the final result of 5.28.
Answer:
Top left graph
General Formulas and Concepts:
<u>Statistics</u>
- Scatter Plots
- Best Line of Fit
Step-by-step explanation:
The best linear model for the data would be the best line of fit for the data. We can eliminate the rightmost graphs as they have no correlation with the data.
Between the leftmost graphs, we can see that the top left graph would be choice as it encompasses most of the data/is more of the data's average than the bottom one.
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![\frac{3x}{x - 2} = 7 \\](https://tex.z-dn.net/?f=%20%5Cfrac%7B3x%7D%7Bx%20-%202%7D%20%20%3D%207%20%5C%5C%20)
Multiply sides by ( x - 2 )
![(x - 2) \times \frac{3x}{x - 2} = (x - 2) \times 7 \\](https://tex.z-dn.net/?f=%28x%20-%202%29%20%5Ctimes%20%20%5Cfrac%7B3x%7D%7Bx%20-%202%7D%20%20%3D%20%28x%20-%202%29%20%5Ctimes%207%20%5C%5C%20)
Simplification
![3x = 7x - 14](https://tex.z-dn.net/?f=3x%20%3D%207x%20-%2014)
Subtract sides 7x
![- 7x + 3x = - 7x + 7x - 14](https://tex.z-dn.net/?f=%20-%207x%20%2B%203x%20%3D%20%20-%207x%20%2B%207x%20-%2014)
Simplification
![- 4x = - 14](https://tex.z-dn.net/?f=%20-%204x%20%3D%20%20-%2014)
Negatives simpliflies
![4x = 14](https://tex.z-dn.net/?f=4x%20%3D%2014)
Divide sides by 4
![\frac{4x}{4} = \frac{14}{4} \\](https://tex.z-dn.net/?f=%20%5Cfrac%7B4x%7D%7B4%7D%20%20%3D%20%20%5Cfrac%7B14%7D%7B4%7D%20%20%5C%5C%20)
![x = \frac{7}{2} \\](https://tex.z-dn.net/?f=x%20%3D%20%20%5Cfrac%7B7%7D%7B2%7D%20%20%5C%5C%20)
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