The logarithmic expression 3log2x - log2(2y) +7 can be written as Select one: O a . x 3 1092 4y Ob. X 109 2 72 1+7 O c. 64x3 1092 y O d. 3x 3 1092 24The X-intercept of the graph of f(x) = log,(x) is 1. The x-intercept, to the nearest hundredth, of the graph of the transformed function y = 4f(3- x) + 3 will be Answer: A correct expansion of the logarithmic expression 2log,(8xy ) is Select one: O a. 4+log,8xy O b. log482+ 2log,xy* O c. 3+ logx2+logy+ O d. log,82+ log,x#+logy+The point (-1, 2) lies on the graph of y = f(x), which then undergoes a vertical and a horizontal stretch. The corresponding point on the graph of the transformed function is (- 4, 3). What is the vertical stretch factor