☕️Easy points for those who are good at math☕️

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.

Me asap! what is the slope of this line? enter your answer in the box.

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!