Is the function linear? If not then why? Find the constant rate of change and write the equation of the line.

Empty box + box + empty box fill in the box is equal to 30 how

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?

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2