Can someone help me with number 27? i just need to know how to solve it and i can do the reat

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.

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Select the graph of the solution. click until the correct graph appears. |x| = 3