What is the speed of a housefly in feet per second round to the nearest hundreth

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

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