Chapter 2.3, Problem 30E

Describe why the horizontal line test is an effective way to determine whether a function is one-to-one?

During a nine-hour snowstorm, it snows at a rate of 1 inch per hour for the first 2 hours, at a rate of 2 inches per hour for the next 6 hours, and at a rate of 0.5 inch per hour for the final hour. Write and graph a piecewise-defined function that gives the depth of the snow during the snowstorm. How many inches of snow accumulated from the storm?

Find f(1) and f(2). f(x)=xx1

Let f(x)=x²-9x +4. Find f(-1). f(-1) = 106 19,758 NOV 30

\text { 20. } f(x)=|x-3|

Give an example of a real function that is increasing on the interval (0,2), and decreasing on (2, 4).