Answer:
A=13+B
Step-by-step explanation:
Linda earns $13 each hour working part-time at a bookstore.
Linda earns $1 for each book she sells.
Let
A be the amount (in dollars) that Linda earns in an hour;
B be the number of books Linda sells in an hour.
So,
[tex]A=13+B\cdot 1\\ \\A=13+B[/tex]
The graph is shown in attached diagram