Adding &subtracting negative numbers
Evaluate 14 + (-9) - (-9)=?

Airline passengers arrive randomly and independently at the passenger-screening facility at a major international airport. the mean arrival rate is 10 passengers per minutes. compute the following probabilities. p(x = 4) p(x > 11)

Acar travels at an average speed of 56 miles per hour. how long does it take to travel 196 miles

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?