What is (8x10)+(3x1)+(4x1/10)+(5x1/100)+(7x 1/1000) written in standard form? A. 834.57 B. 83.457 C. 83.4057 D. 830.457

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.