Can someone help me with this ?! If p(x)=x^2+x+1 and Q(x)=5x^2-1, find the following

1. Q(4)
2.p(-4)
3.p(1/2)

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.