Limit of f of x as x approaches 5 where f of x equals x plus 4 when x is less than -5 and f of x equals 4 minus x when is is greater than or equal to -5

How much money does ron have left each month after his fixed expenses? ron graduated from college five years ago. he recently bought a house, but shares it with a housemate who pays him $800 a month for rent and utilities. ron is putting a budget worksheet together so he will have a better idea of where his money is going and where he can save. enlarge