Shiplas gym membership includes a one-time fee of $20. She then pays a discounted fee of $5 for each visit . The function that shows her average cost after the x visits is : recall the general for of a rational number

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.