Please help w my khan acc

Can someone answer it, and plot it, for 20 points and brainliest answer? p.s. they're the same ! : )

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.

If 5x - 2 = -12, then x = a) -50 b) -4.4 c) -2.8 d) -2