Select the pair of equations whose graphs are perpendicular.
a.2y = –3x + 5 2x + 3y = 4
b.5x – 8y = 9 12x – 5y = 7
c. y = 2x – 7 x + 2y = 3
d. x + 6y = 8 y = 2x – 8

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

so far i think you have the right thing going for you just remember soh cah toh

step-by-step explanation:

sine over hypotenuse

cosine   equals adjacent

tangent over hypotenuse