What subtraction expression does the number line model show?

What kinds of numbers have an odd number of factors?

Graph the system: f(x)= 3/x-2; f(x)= 1/2x + 2

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.