Which facts are true for the graph of the function below? check all that apply. f(x) = 4 5x

a. the range of f(x) is y > 5.
b. it is decreasing.
c. it is increasing.
d. the y-intercept is (0, 5).
e. the y-intercept is (0, 4).
f. the domain of f(x) is all real numbers.

The stem-and-leaf plot shows the heights in centimeters of teddy bear sunflowers grown in two different types of soil. soil a soil b 5 9 5 2 1 1 6 3 9 5 1 0 7 0 2 3 6 7 8 2 1 8 3 0 9 key: 9|6 means 69 key: 5|8 means 58 calculate the mean of each data set. calculate the mean absolute deviation (mad) of each data set. which set is more variable? how do you know?