What is the standard deviation of the following data set rounded to the nearest tenth?

7.7, 8.4, 9, 8, 6.9

Graph the system: f(x)= 3/x-2; f(x)= 1/2x + 2

If f(x) = 2x - 6 and g(x) = 3x + 9, find (f - g)(x). a. (f-g)(x) = x + 15 o o b. (f- g)(x) = -x - 15 o c. (f- g)(x) = 5x + 3 o d. (f- g)(x) = -x+3 submit

Jose predicted that he would sell 48 umbrellas. he actually sold 72 umbrellas. what are the values of a and b in the table below? round to the nearest tenth if necessary