Question 14 (1 point) The logarithmic equation clog, b = 3, where a > 1, expressed in exponential form could be Oab = 3 Oa = bc Oabc = 3 Oa3 = bc unQuestion 15 (1 point) Which of the following is equivalent to 7" = a + 3? Olog(a+3) 7 = y Ology(a + 3) = y Olog, 7 = a +3 12 O log7 y = a + 3Question 16 (1 point) Each of five students made a different statement about the graph of y = 2 log(1/3) x. Student 1 There is no x-intercept. Student 2 There is no y-intercept. Student 3 The y-intercept is 2. Student 4 The x-intercept is 1. Student 5 The graph is decreasing. The three students who made a correct statement, listed in any order, are A A/ , and AQuestion 17 (1 point) A research lab recorded the decay of a radioactive substance. The data table shows the amount of the substance remaining Time (h) 14 28 48 72 104 148 Percent of 90 80 70 60 50 40 Substance (%) These data may be represented by an logarithmic regression function of the form P = a+b . Int. where Prepresents the percent of substance remaining after t hours. How many hours, to the nearest hour, will there be only one quarter of the original sample remaining. A/