Someone pls help and don't scam me pls #4

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.

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

What number line represents the solution set for the inequality -1/2 greater than or equal to 4