Which of the following is an example of a Unit Rate? A 10 pounds of apples cost $4.

B Each marker costs $0.50.

C Steve runs 3 miles in 20 minutes.

D A half sub costs $2.50.

John bought 2 horses at rs 20000 each

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)

Afurniture store is having a weekend sale and is offering a 20% discount on patio chairs and tables the sales tax on furniture is 6.25%