Which answer includes the intervals that contain the solution to the inequality? x² - 1
3x + 9
0 [-3, -1)/(1,2)
O(-3,-1] U[1,2)
0[-CO-3) U(-1, 1)
0 (-0,-3) U[-1, 1]

The system of equations graphed below has how many solutions?

An airport in death valley is 60 feet below sea level, and an airplane is flying 2,000 feet above sea level. how many feet must the plane descend in order to land? a. 2060 b. 2000 feet c. 1940 feet d. 1880 feet e.1400 feet will mark as brainliest

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?