A video posted on the internet had 3,200 views.

a) The video got 4,640 views in its second week. What was the percent increase in the views from the first week?

b) In the third week, the views decreased by 5% from the second week. How many views were there in the third week?

(I need answer b please)

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)