Anyone know the answer to this ?

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?

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?

What is the distance from zero if a quadratic function has a line of symmetry at x=-3 and a zero at 4