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18. Compare dy and Ay for y=3x +2 atx =1 with Ar=dx=-0.03. Give your answers to four decimal places. A) dy=-0.1900; Ay =-0.1775 B) dy= 0.1800; Ay =-0.1773 dy =-0.2100; Ay =-0.1774 D) dy=-0.1600; Ay =-0.1776 E) dy =-0.1600; Ay = -0.1774 19. Find the differential dy of the function y = xsin(6x). A) sin(6x)dx B) 6xcos(6x)dx C) (sin(6x) + 6xcos(6x)) dx D) -6x cos(6x)dx E) (sin(6x) - 6xcos(6x) ) dx 20. The radius of a spherical balloon is measured to be 6 inches, with a possible error of 0.07 inch. Use differentials to approximate the maximum possible error in calculating the volume of the sphere. Round your answer to two decimal places. A) +10.56 cubic inches B) 115.83 cubic inches +13.19 cubic inches D) 131.67 cubic inches E 147.50 cubic inches