B. Sandwich costs $7.70 and the soda costs $2.20
A. (x+3)(4x+5)
(multiply x with 4x+5 then multiply 3 with 4x+5)
=4x^2+5x+12x+15
=4x^2+17x+15
b,c, and d are similar
First let's calculate the profit in the deal, subtracting the market value and the selling value:

So the profit is $55,000.
Now, calculating the fee of 10% of the profit, we have:

So the fee is $5,500, therefore the correct option is the fourth one.