The scores of students on the SAT college entrance examination in a recent year were normally distributed with a mean of 1060 and standard deviation of 195. Using the table not your calculator, what is probability a single student randomly chosen from all those taking the test scores less than 850? (Round your answer to the nearest ten -thousandth. Your answer should look like .1234)

Ascientist places 24 cells in a petri dish. she knows the cells grow at an exponential rate, doubling in number every hour. how long will it take (in hours) for there to be 1100 cells in the dish? time to 1100 cells: 5.51832530 hours how long will it take to reach 110 cells? time to 110 cells : 2.1963972 hours what is the average rate of change in the number of cells between 9 hours and 11 hours? average rate of change: cells per hour what is the instantaneous rate of change after 7 hours? instantaneous rate of change: cells per hour note: you can earn partial credit on this problem.