Teachers in United States high schools teach an average (arithmetic mean) of 80 hours per month, with a variance of 100. What numbers of monthly teaching hours is exactly two standard deviations away from the mean?

It takes a total of 6 hours to fill up an inground backyard pool using a standard house. a function can represent this situation to represent the amount of water in the pool until it is full a function of time the hose is running. determine the domain for the function

What is the value of x? enter your answer in the box. x = two intersecting tangents that form an angle of x degrees and an angle of 134 degrees.

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2