There were 20 members in the running club in september. the membership increased to 25 in october. the membership decreased back to 20in november what was the percent increase from september to october

true? is that what you're asking or do you mean something else?

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

idek

step-by-step explanation: