Complete the statements for the graph of f(x) = |x|. The domain of the function is. The range of the function is. The graph is over the interval (0, [infinity]). The graph is over the interval (–[infinity], 0).

On a test the graders have a mean of 77 and a standard deviation of 8. if we can approximate the distribution of these graders by a number distribution what percent of the students. a) scores higher than 77? b) should pass the test (grades > 60)? c) should fail the test (grades < 60)?