What is the relationship between the 6s in 66,0472

Which matrix multiplication is possible?

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.

Negative 5 1/12 + negative 4 1/4 + 6 3/4