42. Composite scores on the ACT exam fell from 21.0 in 2001 to 20.8 in 2002. What percent decrease was the drop? (Source: ACT.)

The system of equations graphed below has how many solutions? y = 2x + 2

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.

Sum is 17 and their difference is 3