the charge to use a self carwash is $6 for the first 5 minutes and then $0.50 for each additional minute. assuming the driver uses the carwash for at least 5 minutes, the function f(x)=6+0.50(x-5) models the cost of the carwash for x minutes. what is the reasonable domain for this function? Explain the reasoning used to determine the answer.

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y < 4x − 8 y is greater than or equal to negative 5 over 2 times x plus 5 part a: describe the graph of the system, including shading and the types of lines graphed. provide a description of the solution area. (6 points) part b: is the point (5, −8) included in the solution area for the system? justify your answer mathematically. (4 points)