13. attend to precision. justify each step in the solution of 5x + 15 = 0 below by stating a property or providing an explanation for each step

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

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?