The height of the corn stalk in inches over the first 8 weeks of growth could be roughly modeled by the function h(t)=2(1.6t) where t is measured in weeks. on which week of growth would the corn stalk grown to 21 inches.

A. week 8
B. week 7
C. week 6
D. week 5

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)