please help me. thank you.

Damon convinced his aunt to lend him $7,400 to purchase a plasma digital TV. She has agreed to charge only 8 percent simple interest, and he has agreed to repay the loan at the end of one year. How much interest will he pay for the year? Interest amount Rebecca wants to buy a new saddle for her horse. The one she wants usually costs $500, but this week it is on sale for $390. She does not have $390, but she could buy it with $60 down and pay the rest in 6 months with 14 percent interest. Does Rebecca save any money buying the saddle this way? (Do not round intermediate calculations. Round your answer to 2 decimal places.) Amount saved