C. the values can be added after making a conversion of units because they both measure length.
0.6 pounds because you would divide 3 by 5 and get 0.6
I believe they are: (2,8), (4,6), (1,7), and (3,5) I could be wrong, but I'm almost certain that's it. Hope that helps.
1. Change x = 4t into x = 3t

so

Answer A and D are wrong.
2. Change x = 4t into x = 2t

and

Answer b is correct.
3. Change x = 4t into x = 8t

and

Answer C. is correct, E. is wrong.
Answer:
4
Step-by-step explanation:
4 x 5= 20
4x6 = 24
So 4 can go in 20 and 24 making it the common factor