2 algebra 2 questions. Please help!! I'll give medals.

Question

anonymous · Answer

attachment

anonymous · Answer

can you guys help me?

anonymous · Answer

2 is A i dont know 1 though @welshfella

anonymous · Answer

just keep saying @welshfella

anonymous · Answer

im guessing b for the first but im not sure

anonymous · Answer

1 is A for sure though

anonymous · Answer

Thank you!

anonymous · Answer

Do you know anyone who can help me with the first?

anonymous · Answer

no 2 is A for sure

anonymous · Answer

yes @welshfella just keep saying that and hell come

anonymous · Answer

hes here

anonymous · Answer

@welshfella can you please help me?

welshfella · Answer

hmm its been a while since i did these
what I do remember is that there is a fraction outside so  -1/71 is correct

anonymous · Answer

so it is either A or C?

welshfella · Answer

yes

anonymous · Answer

Do you think it is A? because you put negatives in front of numbers B and C, which s 7 and 3. and the 10 is already negative, so every number would be negative but the 5 which is only in the first answer choice.

welshfella · Answer

I don't think its C because the matrix part is the same as the one in question 
I would say its A
Sorry I can't be certain

anonymous · Answer

that's okay! thank you for your help

welshfella · Answer

yea i checked it out on the matrix calculator  Its definitely A

welshfella · Answer

good thinking Kimberely