What is the estimate for 7.98 + 4.89 + 5.12

Ineed to learn how to solve this problem

Which expression is equivalent to 5r6141 2r+st6

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.