Eilleen swam 7500 yards in 2.5 hours how far can she swim in one hour

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.

Hi, can anyone show me how to do this problem? 100 points for this. in advance

Solving algebraic equations 2m+3=11