Which equation best models the fine schedule for overdue books? , where x is the cost in cents for a book that is y days overdue
, where y is the cost in cents for a book that is x days overdue , where x is the cost in cents for a book that is y days overdue , where y is the cost in cents for a book that is x days overdue Mark this and return
x is the independent variable, and in this scenario, the independent variable is the number of days overdue. So the best equation would be where x is the number of days overdue, and y is the cost in cents.
First of all, we can just ignore A, it has no effect but to vertically stretch our cosine.
If it was only , the function would be invertible as long as it's confined between and . Now, the argument of our cosine is not but . It means that it won't stop at , but at .
Another way to think about it, "what should i replace x with so I get inside the cosine?"