The yogurt shop wants to mix two toppings together to create a new topping that will sell for $7 per pound. the caramel crunch costs $3 per pound, and pecan turtles cost $8 dollars per pound. how many pounds of each item must be mixed together to get 10 pounds of this new topping?

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)