With homework algebra 2: what is the quotient (72y3 + 12y2 − 30y) ÷ 6y? 12y2 − 2y + 5 12y2 + 2y − 5 12y3 + 2y2 − 5y 12y2 − 2y − 5

Can someone me and do the problem plz so i can understand it more better

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?

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?