Geometry, help please ???

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 is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi

The slope of the line whose equation is 3y = 2x - 3 is 2 2/3 3/2