If I make $7.25 a hour and I work for three days how much money is that every two weeks

I am pretty sure it would be $43.50 every two weeks because $7.25 x 3 is 21.75 and then for two weeks add 21.75 + 21.75

There are a couple of things you didn't mention.

In order to come up with an answer to the question,

I have to assume reasonable numbers for them, and

then answer the question that I have invented.

Assumption #1: Each day that you work, you work for 8 hours.

Assumption #2: You work for three days each week.

If those assumptions are true, then you earn

($7.25 / hour) x (8 hours/day) x (3 days/week) x (2 weeks) =

($7.25 x 8 x 3 x 2) = $348 before taxes and other deductions.