Can anyone help me please

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.

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,

Ineed with the quizzes in apex mathematics ii