Expand the expression 3(x - 5)

Don't know how to find x given these segment lengths

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.a city water tank holds 20 gallons of water. a technician empties 25% of the tank. how many more gallons of water must be removed from thetank so that it has 5 of the water that it started with: the technician must removemore gallons of water for the tank to have 5 of the water that it started with.