Which of the following is true for the function /(x) = x - 3? a. f(x) is increasing between 0 and 5 and has an x-intercept at x = 3. b. f(x) is decreasing between 0 and 5 and has an x-intercept at x = 3. C. f(x) is decreasing between 0 and 5 and has an x-intercept at x = -3. d. f(x) is increasing between 0 and 5 and has an x-intercept at x = -3.