Express the series using sigma notation 6b + 3b + 0 + (-3b) + (-6b).
choices:
a. sigma n=1 5 above the sigma, -3bn-9b
b. sigma n=1, infinity above the sigma, -3bn+9b
c. sigma, n=1, infinity above the sigma, -3bn-9b
d. sigma, n=1, 5 above the sigma, -3bn+9b

The equation shown below represents function f. f(x)= -2x+5 the graph shown below represents function g. which of the following statements is true? a. over the interval [2, 4], the average rate of change of f is the same as the average rate of change of g. the y-intercept of function f is less than the y-intercept of function g. b. over the interval [2, 4], the average rate of change of f is greater than the average rate of change of g. the y-intercept of function f is greater than the y-intercept of function g. c. over the interval [2, 4], the average rate of change of f is the same as the average rate of change of g. the y-intercept of function f is greater than the y-intercept of function g. d. over the interval [2, 4], the average rate of change of f is less than the average rate of change of g. the y-intercept of function f is the same as the y-intercept of function g.