Answer:
a
Step-by-step explanation:
C 12 minutes is the correct answer. Hope this helps :)
I believe it is 960 inches. For the long triangles, I just made them a square so I multiplied base times height. For the small triangles, i did the same thing. Long triangles were 640, small triangles were 320
The first set of expressions bc 3x is equivalent to 3x and -7y is equivalent to -7y