When log y is plotted against X. a straight line graph passing through the points (2.2. 3.6) and (3.4.6) is obtained.

(i)
Given that y= Ab^x find the value of each of the constants A and b

(ii)
Find x when y=900

Find the value of x in each case. give reasons to justify your solutions! d q ∈ pr

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)

What is the frequency of the sinusoidal graph?