Please answer there are 3 parts to this question please answer all three.

Chrissy currently has a credit card that charges 12 percent interest annually. She usually carries a balance of about $400. Chrissy has received an offer for a new credit card with a teaser rate of 3 percent for the first three months; after that, the rate increases to 15.5 percent. Assume that interest is compounded daily and there are 365 days in a year. What will her total annual interest be with her current card? What will her interest be the first year after she switches? Should she switch based on the first year interest? What will her total annual interest be with her current card? Chrissy's total annual interest with her current card is $ (Round to the nearest cent.)