You charge $2500 to a credit card. Use the compound interest formula to find the new amount you'll owe on your credit card after 6 months (i. e. 1/2 year) with 20% APR compounded daily (assuming you don't make any payments). The compound interest formula A=Px 1 + x(1 r)nt Where A = final amount P = initial balance (principal) interest rate as a decimal (e. g. 5% would be 105) n = number of times interest applied per year (e. g. 12 for monthly, 52 for weekly, 365 for daily) time in years (e. g. 6 months would be 0.5) Interest Calculated Did I get it right?​