Joanna purchased four boxes of cookies for a party. Each box cost $3.28, including tax. Need help !!

Answer question above and explain each step : )

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?