How do i identify the slope and y-intercept of the like on a graph

Guys i really need or i have to stay late up night

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m

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?