HELP PLS I NEED TO GET THIS DONE

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.

Select the quadratic that has root x = 8 and x = -5

Simplify the expression. -2/5(10+15m-20n)