How many possible 7 digit phone numbers can be created from the digits 0 through 9 if numbers cannot be repeated and the first number cannot equal 0? a.181,440 b.544,320 c.604,800 d.10,000,000 select the best answer from the choices provided a b c d

Asap 25 pts + brainlest to right/best answer

The appalachian trail is a hiking trail that passes through the appalachian mountains. three members of a teen hiking group hiked a section of the trail. the hikers stopped at a rest area and equally shared 3 4 gallon of water. how much water did each person get?

Precalculus question, image attached.