Write a rule of the form (x, y) - (x^2,y^2) where the point after the arrow represents the change of the point under the tranformation

Which of the following is the missing term, a2, of the geometric sequence in which a1=2 and a3=200

What is the slope of the line that contains the points (-2,1) and (0,-3)

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)