suppose you own a car that is for months old. from an automobiles dealers blue book you find that it's trade-in value 3200. from an old blue book you find thats its trade in value 10 months ago was 4700. write a function expressing the trade in value as a function of the cars age in months

Bring the fraction a/a-4 to a denominator of 16-a^2

Aculture started with 2,000 bacteria. after 8 hours, it grew to 2,400 bacteria. predict how many bacteria will be present after 19 hours . round your answer to the nearest whole number. p=ae^kt

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)