What is true about the completely simplified sum of the polynomials 3x?y2 - 2xy and -3x?y2 + 3x^y?

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?

Solve the equation. 2x - 8(x+1)= 6(2x - 3)

The function f(x) is shown in this graph the function g(x)=6x