What is the domain and range

If 1 is divided by the sum of y& 4. the result is equal to 3 divided by 4 .find the value of m?

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?

Asequence is defined recursively using the formula f(n + 1) =f(n) - 5. which sequence could be