9. x = log3 200. An intermediate step is A. log10 200 10910 3 B. log103 10910 200 C. log 10 3 200 D. 200 log 10 3 10. What is one of the three pairs of polar coordinates for the point (5, -60) with -360 < 0 360? A. (-5, 60) B. (-5, 120) C. (-5, 300) D. (-5, 240) 11.10914 = x; x = A.-2 B. 2 C. 1/1 D. - 1/1/1 12. Given that A = 5T-12], and B= 61-8], find - B. A. 126 B. 32 C.-66 D.-112 13. Find x such that + 3] and 2T+x] are perpendicular to each other. A. B. 273 372 C.-93135 D. 33 23 Niw 2