WORD PROBLEMS 9. Suppose you are selling crafts at a craft show. It costs you $100 to rent a table. Each item
costs you $4 to make. You sell them for $10 each.
а.
b
Write an Income and Expense equation for this situation.
Use elimination or substitution to determine the number of crafts you will need to sell to
break even

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)