For the function: f(x) =

Find
1. f'(x)
2. Interval of increase and decrease and the extrema and determine its
nature
3. f'(x)
4. Intervals of concavity and inflection point(s) (if any)
5. Sketch its graph

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?

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

Need solving this 2nd limit problem.