1. bobby would be 21 and chris 18.
Answer: True
Think of a 3D box. It has 6 faces and the surface area is the total of all six individual rectangular faces. This idea applies to any polyhedron.
$2.00 cause imagine she has 6 dollar 2/3 is 4.00 so it's 2.00
Step by Step:
(z^2 -2z)(10z-20)
z(z-2)+10(z-2)
(z+10)(z-2)
Hope this helps.
