please help im almost done. consumer mathematics

Question

1) Doug Fox purchased $100 in traveler's checks. He had to pay a 1% fee. What was the total cost of the checks?

2) Darcy McMillan borrowed $3,600 for 7 months and had an interest charge of $250. Find the approximate annual interest rate to the nearest tenth of a percent.

3) Larry Burbach owed a credit card company $4,000. He paid $350 one month and did not charge any new items. He is charged 1.8% monthly interest on the unpaid balance. How much will his new balance be?

Answer 1

1) $100+$1= $101

1% of $100= $1