2(5x+5) + 9(x-10) + 9-squared

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.

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.

Witch represents the inverse of the function f(x)=1/4x-12