Maria's book is 8 days late.
What is linear equation?
An equation is said to be linear if the maximum power of the variable is consistently 1. Another name for it is a one-degree equation. A linear equation with one variable has the conventional form Ax + B = 0. In this case, the variables x and A are variables, while B is a constant.
Let, the late fee for library books is $2. 00 plus 15 cents each day for a book that is late.
Maria's fee for a late book was $3. 20.
As late fee consists of $2.00 fine plus $0.15D fee or each day:
So,
LF = $2.00 + $0.15D
where D is number of days.
Here late fee for book is $3.20
⇒ $3.20 = $2.00 + $0.15D
$3.20 - $2.00 = $0.15D
$1.20 = $0.15D
D = $1.20/$0.15
D = 8
Hence, Maria's book is late for 8 days.
To know more about linear equations, click on the link
https://brainly.com/question/26310043
#SPJ4
