Arianna starts climbing at an elevation of 0 ft. She climbs 17 ft to the top of the hill. Then she descends 17 ft. What equation represents Arianna's elevation after she descends the hill?

Plsss help

Math each whole number with a rational, exponential expression

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.

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?