Question 1194148
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x = number of books rented
Each book costs $1 to rent, so this is the extra cost on top of the $10 pass.
The total cost would be x+10 dollars.
The equation is y = x+10 where y is the total cost.


It is of the form y = mx+b aka slope-intercept form
m = 1 = slope
b = 10 = y intercept


The slope is the extra cost per book rented
The y intercept is the starting cost. It's the amount paid even if you rented 0 books.


Plug in x = 15 to find the value of y
y = x+10
y = 15+10
y = 25
It costs $25 if you rented 15 books.
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