At the beginning of a population study, a city has 340000 people. Each year since, the population has grown by 8.4%. Let t be the number of years since start of the study. Let y be the city's population. Write an exponential function showing the relationship between t and y.

Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota

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)

Which graph represents the same relation as the table below? x f(x) –2 5 0 1 1 –1 2 –3