Which of these is a factor in this expression? 524 - 3+8 (73 + 7)
A. 524 - 3
B. -3+8 (+ 7)
O c. (y + 7)
D. 8 (93+7)

Which of the following are parts of a sphere

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?

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)