Idk this i really need with this if anyone wants to plz do

Place the following steps in order to complete the square and solve the quadratic equation,

Aline that intersects one of two parallel lines intersects the other also always sometimes never

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?