South America's greatest river system is the . Mississippi-Missouri
Nile
Amazon
Rhine

On saturday morning, calls arrive at ticketmaster at a rate of 108 calls per hour. what is the probability of fewer than three calls in a randomly chosen minute?

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.

If using the method of completing the square to solve the quadratic equation x 2 + 16 x + 24 = 0 x 2 +16x+24=0, which number would have to be added to "complete the square"?