Gianna was comparing the price of apple juice at two stores. The equation y = 0.58x represents what Gianna would pay in dollars and cents, y, for x bottles of
apple juice at store B. Gianna can buy 10 bottles of apple juice at Store A for a total
cost of $21.80.

How much less is a bottle of apple juice at Store B than at Store A?

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)