Please help!! I’m timed

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.

When a valve is open 281 gallons of water go through it in one hour the number of gallons that would go through in 94 hours is

What are the solutions for the following system? -2x^2+y=-5 y=-3x^2+5