This is easy all you do to find the surface area is to multiply base the number that is across by the height the number that shows the height.The you just multiply those 2 and you got the surface area.For number one the answer is,20.For two the answer is, 6.Need more help ask me under in the comments. If this was helpful please give me brainiest answer. Hope this Helps :D
Find the same number in the numbers you have and that is your answer
The answer is th egraph c
Substitute 21 for x.
y = 21 - 4 = 17
