Remember to show all appropriate work/reasoning on your work paper. All work will be submitted separately after completing the test. Do not click on the Submit Assessment button until you are done with the entire assessment. Please remember to clearly number your work, call this exercise Question 5. 3x For the function f(x) = e (4x + 7), use calculus to determine any interval(s) where the function is concave up, any interval(s) where the function is concave down, and any inflection point(s) for the function. f(x) is concave up on f(x) is concave down on f(x) has inflection point(s) at