What type of lens was used to take this picture?

fish-eye
bulb
telephoto
standard

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

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?

Rationalize the denominator- 12x/√x-10