Which of the following statements describes a correct method for solving the equation below? 3x + 3 = 6x a. subtract 3x from both sides of the equation, and then divide both sides by 3. b. add 3x to both sides of the equation, and then divide both sides by 3. c. divide both sides of the equation by 6, and then subtract 3 from both sides. d. divide both sides of the equation by 6, and then add 3 to both sides.

Anew test for ra is being developed. the test is administered to 750 patients with ra and 750 without ra. for the sake of the question, assume the prevalence of ra in this population is 50%. of the 750 patients with ra, 575 have a positive result. of the 750 patients without ra, 150 have a positive result. what is the positive predictive value of the new test? a575/(575+150) b. 600/(600+ 150) c. 575/(575+125) d. 600/(600+ 125)