Tyson saved 500 dollars for a week-long vacation. he did not keep close track of how much he spent the first three days. on the fourth day, he had 225 dollars. write an equation to represent the amount he spent in the first three days.

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?