Please help! What are the answers for these 3?

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.

Find the value of x. round the length to the nearest tenth

Consider the sequence below. 3 , 1 , 1/3 , 1/9 , select the explicit function which defines the sequence.