please explain for each question how you got the answer

19) True or False? After 60 years, a population growing at a rate of 4% per year will have grown by twice as many people as a population growing at a rate of 2% per year. A) True B) False 23) True or False? Longitude measures positions east or west position. A) False B) True 24) True or False? Two triangles are similar if the},r have the same size, but not necessarily the same shape. A) False B) True 27) The half-life of a drug in the bloodstream is 12 hours. By what factor does the concentration of the drug decrease in 23 hours?28) Urban encroachment is causing the area of a forest to decline at a rate of 5% per year. Use the approximate halfer formula to determine the half-life of the forest. 29} Ination is causing prices to rise at a rate of 6% per year. Use the exact double time formula to determine what the price will be in 4 years if the item costs $100 today. 30) A certain drug is eliminated from the bloodstream exponentially with a halfer of 60 hours. Suppose that a patient receives an initial dose of 10 milligrams of the dmg at midnight. Estimate when the dmg concentration will reach 20% of its initial level. 31) If prices increase at a monthly rate of 0.5%, by what percentage do they increase in a year? 32) A computer is purchased for $4600. Its value each year is about 76% of the value the preceding year. Find the value of the computer after 8 years. \f