Answer:
the third one I think please see be right
Answer:
b.
Step-by-step explanation:
To figure this out, you just need to fold those nets in your head and see if the edges line up and it forms the figure you want it to. From what I can tell, net b is the only one that would form a rectangular prism.
Answer:

Step-by-step explanation:
Sum of m and one - third of n is :

Product of 3k to the sum is :

Answer:
He made a mistake in step 2
Step-by-step explanation:
-3x does not equal 6 it clearly states it equals 1
Answer:
B = C + (C - A) = (51/50 + 51/50 - 2, 457/50 + 457/50 - 9) = (1/25, 232/25).
Step-by-step explanation: