Answer the following question, with explanation first.
Bob orders a dozen muffins a day for $0.75 each and sells them for $1.5 each. How much profit does he make a week?

63
He buys them for 12 *.

75 = $9.

He sells them for 12 * 1.

5 = $18.

So he makes 18 - 9 = $9 per day.

That means he makes 9 * 7 = $63 per week.

.

Therefore, the answer is 63