Hey could someome me wit question 16

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.

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

The graph shows the function y equal 3x-1 what are the coordinates of the intercepts