Which quadratic equation defines the function that has zeros at −1/12 and 1/4
a) -48x2 - 8x - 1 = 0
b) 48x2 - 8x - 1 = 0
c) 48x2 + 8x - 1 = 0

11 feet 6 inches and 8 feet 6 inches

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2