Which facts are true for the graph of the function below? check all that apply.
f(x) = log7 x
a. it is increasing.
b. the y-intercept is (0, 7).
c. the domain is x > 7.
d. the x-intercept is (1, 0).
e. the range is y > 0.
f. it is decreasing.

Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the household uses (in hundreds of cubic feet, hcf). when graphed, the function gives a line with slope of 1.65. if the monthly cost for 13 hcf is $46.10 what is the monthly cost for 19 hcf?