5 Summarize the pertinent information obtained by applying the graphing strategy and sketch the graph of f(x) = 1+ 5x O B. There is a local maximum at x = and there is a local minimum at x = (Type integers or decimals. Use a comma to separate answers as needed.) O C. There is a local minimum at x = . There is no local maximum. (Type an integer or a decimal. Use a comma to separate answers as needed.) O D. There are no local extrema. Find the intervals where f(x) is concave upward or downward. Select the correct choice below and fill in the answer box(es) to complete your choice. O A. The function is concave upward on . It is never concave downward. (Type an exact answer in simplified form. Type your answer in interval notation. Use integers or fractions for any numbers in the expression. Use a comma to separate answers as needed.) O B. The function is concave downward on . It is never concave upward. (Type an exact answer in simplified form. Type your answer in interval notation. Use integers or fractions for any numbers in the expression. Use a comma to separate answers as needed.) O C. The function is concave upward on . It is concave downward on (Type exact answers in simplified form. Type your answers in interval notation. Use integers or fractions for any numbers in the expression. Use a comma to separate answers as needed.)