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Answer: 
Step-by-step explanation:
Since, the quotient of 6 and r = 
The sum of two and the quotient of 6 and r
= 
And, Five-sevenths of the sum of two and the quotient of 6 and r
=
Thus, the required expression is,
Since the ratio of their similar sides are equal hence the triangles are similar
<h3>Scale factors</h3>
Two figures are are known to be similar if the ratio of their similar sides are equal to a constant known as the scale factor.
For the triangles given, take the ratio of the sides;
12/2 = 6
30/5 = 6
36/6 = 6
Since the ratio of their similar sides are equal hence the triangles are similar
Learn more on similar shapes here: brainly.com/question/2644832
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$ 7 dollars a week for 4 weeks...
7 * 4 = $ 28 <==
