1. Let f (x) be a function that is positive and decreasing for every real number x. a. Fill in the \"Answer" column in the table below with: \"Increasing\": if the function 9(x) is increasing for all real values of x. \"Decreasing": if the function 90:) is decreasing for all real values of 1:. \"Some of each\": if the function g(x) is decreasing for some real values of x and increasing for others. \"Cannot tell\": if there is not enough information to determine that one of the above is true about 90:). b. Fill in the \"Explanation\" column using the given information above about f (x). A clear and mathematical reason must be given. Function Answer Ex - lanation 900 = \"362) .- 900 = U00]: .- 900 = f(x) + x '-