32. We are going to put $2500 into an account that earns interest at a rate of 12%. If we want to have $4000 in the account when we close it how long should we keep the money in the account if we compound interest 6 times a year. 33. The function P(t) = 100(1.025)^t models the population of a city,^ where t is time in years and P(t) is the population size in thousands of people. According to this model, how long would it take the population to double? (Round answer to nearest year.) . 35. The pasteurization process, used in food preservation, was developed by the French scientist Louis Pasteur (1822-1895). He observed that a certain bacteria population grows in milk by 2% per hour; the function N(t) N 0(1.02) ^t = models such a population, where t is time in hours, N(t) is the population size at time t and N 0 represents the initial population size (time t=0). How many bacteria will be present after 1 hour and 45 minutes in a culture containing initially 2,500 bacteria?
omegah4400
2011-10-15 23:22
呢D咁ge數仲煩過pure
牙笨
2011-10-16 11:51
freeze3704:32. We are going to put $2500 into an account that earns interest at a rate of 12%. If we want to have $4000 in the account when we close it how long should we keep the money in the account if we compound interest 6 times a year. 33. The function P(t) = 100(1 .. (2011-10-15 22:08)
好係唔係必須部份黎 m1/m2?
~瘋人~
2011-10-16 13:35
牙笨:好係唔係必須部份黎 m1/m2? (2011-10-16 11:51)
log only
瑋哥
2011-10-16 21:37
32. We are going to put $2500 into an account that earns interest at a rate of 12%. If we want to have $4000 in the account when we close it how long should we keep the money in the account if we compound interest 6 times a year.
Let Y be number of years 2500 X (1+12%/6) ^ (6Y) >= 4000 Y >= 3.96 Y=4
33. The function P(t) = 100(1.025)^t models the population of a city,^ where t is time in years and P(t) is the population size in thousands of people. According to this model, how long would it take the population to double? (Round answer to nearest year.)
P(t) = 2P(0) P(t)=200 100(1.025)^t=200 t=28 出奇的大
35. The pasteurization process, used in food preservation, was developed by the French scientist Louis Pasteur (1822-1895). He observed that a certain bacteria population grows in milk by 2% per hour; the function N(t) N 0(1.02) ^t = models such a population, where t is time in hours, N(t) is the population size at time t and N 0 represents the initial population size (time t=0). How many bacteria will be present after 1 hour and 45 minutes in a culture containing initially 2,500 bacteria?
