Answer:
it's a substitution because y was solved
Step-by-step explanation:
2x +2(3x-7)=10
you just replace the "y' by the solved y
then you solve parenthesis and continue the rest.
The sum of exterior angles equals 360 degrees, which is the total degrees of a circle and all polygons
Using the monthly payment formula, it is found that the amount he will have to pay each month is of $649.45.
<h3>What is the monthly payment formula?</h3>
It is given by:

In which:
- n is the number of payments.
In this problem, considering that the down payment does not count for interest, the parameters are given as follows:
P = 130000, r = 0.0438, n = 30 x 12 = 360.
Then:
r/12 = 0.0438/12 = 0.00365 -> 1+r = 1.00365.
Then the monthly payment is given by:


A = 649.45.
More can be learned about the monthly payment formula at brainly.com/question/2151013
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The ratio is 37:15
For every 37 fiction books there are 15 non fiction books
37/15. = 2 7/15