The difference of 19 and the sum of 7 and k

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?

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d?

Identify this conic section. x2 - y2 = 16 o line circle ellipse parabola hyperbola