The sum of the squares of 3 consecutive positive integers is 116. what are the numbers?

which of the following equations is used in the process of solving this problem?
3n2 + 5 = 116
3n2 + 3n + 3 = 116
3n2 + 6n + 5 = 116

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

Using pert, adam munson was able to determine that the expected project completion time for the construction of a pleasure yacht is 21 months, and the project variance is 4. a) what is the probability that the project will be completed in 17 months? b) what is the probability that the project will be completed in 20 months? c) what is the probability that the project will be completed in 23 months? d) what is the probability that the project will be completed in 25 months? e) what is the due date that yields a 95% chance of completion?