Answer:
The author will need to sell 3000 books in order to earn $7000.
Step-by-step explanation:
OK. So I will start by writing the basic equation for the problem.
x is the number of books sold.
y is the $
She earns 2500 at the beginning, plus 1.50 for every book, or x.
y = 2500 + 1.50x
Now, since we want to find the number of books (x) she needs to sell to get $7000, we can set the equation equal to 7000.
7000 = 2500 + 1.50x
Subtract 2500 from each side
4500 = 1.50x
Divide both sides by 1.50
3000 = x
The author will need to sell 3000 books in order to earn $7000.
