How can you decompose 6/4

Which expression is equivalent to -5(3x - 6/7)

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?

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.