Which phrase describes an unknown or changeable quantity? a. 60 seconds multiplied by 5 b. 2 times the number of pages in the book c. 15 years of schooling d. 3 dollars and 76 cents

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.