I was shocked when I found out my microwave isn't water proof. lol

Show algebraically that f and g are inverse functions f(x)=x^2/-6; g(x)=square root of 2x+12

Given the function f(x) = log base 4(x+8) , find the value of f^-1(2)

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?