Which expression has a simplified expression of 5x - 12?

a. 3(4x - 4) - 7x

b. -3(4x - 4) - 7x

c. 3(-4x + 4) - 7x

d. -3(-4x - 4) - 7x

Write the following as a base and exponent

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.

What is the perimeter of an isosceles triangle with each leg measuring 2x+3 and the base measuring 6x-2?