31. The students are selling wrapping paper to raise money. Each roll of paper sells for $8. Part A
Write an expression that represents the total amount of money in dollars, the students raise
from selling x rolls of wrapping paper.
Part B
The goal of the students was to raise $600. They sold 68 rolls of paper. By what amount did
the students miss their goal of raising $600? Show or explain all of your work
Orange

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)