How do you solve this?
( i is an imaginary number)

(4 + 6i) ^2

Marie will earn $15 per hour at a new job. during training, she will earn $10 per hour. what percent of marie’s regular hourly rate will she earn during training?

Abag of popcorn contains 483 calories and servers 3.5 people. how many calories are in each serving.

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?