Find the number solutions of the equation

Determine the number of outcomes in the event. decide whether the event is a simple event or not. upper a computer is used to select randomly a number between 1 and 9 comma inclusive. event upper b is selecting a number greater than 4. event upper b has nothing outcome(s). is the event a simple event? (yes or no) because event upper b has (fewer than, exactly, more than) one outcome.

What is the inverse of the function f(x) = 2x + 1?

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2