How to solve foil methods give me a example

Given f(t) = 282 - 53 +1, determine the function value f(2). do not include f(z) = in your answer

Find the roots of the equation below. x^2 - 6 + 9 = 0

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?