Answer:
y = - 8x - 39
A) (x-2)(x+4)
Step-by-step explanation:
Hope it will help you
Will no explain too much in details.
The bottom rectangle has sizes 21cm*9cm, so its area is 189cm^2.
The remaining rectangle has sizes 6cm*7cm(16-9=7cm),so its area is 42cm^2.
The area of the object is 231 cm^2.
The perimeter is 21+9+16+6+(16-9)+(21-6) = 74 cm.
