What expression is equivalent to (84+16)

I don't know the options but all you have to do is:

1 - First we sum our expression:

84 + 16 = 100

2 - Secondly, we calculate our options and find the one that equals 100.

Hope it helped,

BioTeacher101

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

c

step-by-step explanation: