Midterm Z Timed Portion Complete by: 8:00 PM EST Upload to Gradescope by: 8:15 PM EDI 12 Problem 4: [30 pts] Morgan needs to evaluate the integral 72 - 9 dx but is unsure how to do so. 12 A. [12 pts] Use the substitution x = 3 sec(0) to show Morgan how to evaluate 7 2 - 9 dx. Simplify your final answer. Hint: You may use the formulas derived in class for / sec(0) de, csc(0) de, tan(0) de, or / cot(0) de should one of them arise. You do not need to derive any of these results