After the 2 new levels of parking spaces are completed, the garage will gain 98 new customers. the garage will then have a total of 171 customers. write an equation to find the number of customers the garage had before the 2 new levels were added. use the letter c to stand for the unknown number in your equation. how many customers did garage have before the 2 new levels were added?

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?

We just started the introduction into circles and i have no idea how to do this.

The american academy of pediatrics wants to conduct a survey of recently graduated family practitioners to assess why they did not choose pediatrics for their specialization. provide a definition of the population, suggest a sampling frame, and indicate the appropriate sampling unit.