Question 3. 3.1.65 ) HW Score: 0%, U of 6 points Part 1 of :3 0 Points: 0 of 1 '6 Use a calculator with a E key or a E key to solve the following. The exponential function {{x) = 563(1.032)" models the population of a country, f(x). in millions, it years after 1963. Complete parts (a) - (e). a. Substitute 0 for x and, without using a calculatot find the country's population in 1963. The country's population in 1968 was D million. Question 4. 3.1.66 HW Score: 0"-"._. > . Part 1 of 2 O Paints: 0 of 1 '6 The 1931 explosion at a nuclear lab sent about 1000 kilograms of a radioactive element into the atmosphere. The function St L {(x} =1000(0.5) 3\" describes the amount. x}. in kilograms, of a radioactive element remaining in the area x years after 1981. If even 100 kilograms of the radioactive element remains in the atmosphere, the area is considered unsafe for human habitation. Find f(70) and determine if the area will be safe for human habitation by 2051. f(?0) z D (Type an integer or a decimal rounded to the nearest tenth as needed.) I6 The bar graph shows the percentage of country A high school seniors who Percentage of country A High School Seniors Applying applied to more than three colleges for selected years from 1930 through to More Than Three Colleges 2013. The data in the bar graph can be modeled by f(x) = x + 31 and glx) = 32380-021\". in which x) and g(x) represent the percentage of high school seniors who applied to more than three colleges in: years after 1980. Use these functions to complete parts (a) through (c) below. N 0 Cl Percentage of high school seniors Year a. According to the linear model, what percentage of high school seniors applied to more than three colleges in 2013? [its Question 6, 3.1.73 5 HW Score: ":53, 0 of 6 points Part. 1 Lil :1 " 0 Points: 0 of 'I The function ff!) = 809' 0'5\" + 20 describes the percentage of information, ffx). that a particular person remembers 3-: weeks after '6 learning the information. a. Substitute 0 for x and, without using a calculator, find the percentage of information remembered at the moment it is first learned. I). Substitute 1 for x and find the percentage of information that is remembered after '1 week. c. Find the percentage of information that is remembered after 8 weeks. cl. Find the percentage of information that is remembered after one year (52 weeks). 511 a. At the moment it is first learned. D% of the information is remembered. (Round to one decimal place as needed.)