Evaluating functions given f(x)=2x^2+3x and g(x)=-4x-7

What is the difference between regular convex and concave polygons

What is the solution of log2  (3x  -  7)  =  3? 4 5

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?