A sequence is defined by the recursive function f(n + 1) = f(n). It f(3) = 9, what is f{1) ?

because f(n) = f(n + 1)

=> f(3) = f(2) = f(1) = 9

step-by-step explanation:

no of data

divide by no of mode

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