If f(x)=x^2-5x+2
a. Find 4f(x)

b. Find -2f (x)+6

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Solve the inequaliy: (x^2+2)(x−2)^2(6−2x)> 0

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.