Sam runs his own business. He uses a separate shipping company and payment company. Here are the facts:

-The items he is selling at priced at $16.25 each.

-It costs him $4.50 to make each.

-shipping company charges $0.30 for each item shipped.

-payment company charges 2% on the cost of each item sold.

-Sam pays $5 a month for the website.

1. Introduce a variable for the number of items that Sam sells. Compose a linear expression for the amount of money he makes monthly depending on how many items he sells. Simplify the expression.
2. Last month he made $2553.75. How many items were sold? Solve the problem by composing & solving a linear equation. Is the answer plausible? Explain.
3. He is hoping to cross the $3330 mark in profits this month. How many items does he need to sell to meet this goal? Is your answer plausible? Explain.