Which sequence is modeled by the graph below? coordinate plane showing the points 2, 1; 3, 2; 4, 4; and 5, 8 a. an = one half (2)n − 1
b. an = 2(2)n − 1
c. an = 4(−2)n − 1
d. an = 2( one half )n − 1

When you are making a circle graph by hand, how do you convert a number for a part into its corresponding angle measure in the circle graph? when you are making a circle graph by hand, what should you do if one of your angle measures is greater than 180°?

Evaluate the expression. (9 + 5)(3 + 2)0

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)