Which table represents an exponential function of the form y-b* when och <1?

For the equations below which statement is true ?

Can some one explain this i got sent this. is this a threat i’m scared

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.