Can anyone help me on question 5?

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.

Write 5 in the form of a/b using integers to show it as a rational number

Ahyperbola centered at the origin has a vertex at (-6,0) and a focus at (10,0)