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Can anyone help with these three

Can anyone help with these three-example-1
User Reznor
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12.

x + 8 \geqslant 5
first subtract 8 from both sides

final answer:

x \geqslant - 3
13.
first: find -5 then go right 2 spaces to find -3.
next: plot point

14. raja made an error in the final step when she switched the inequality sign
User Daemmie
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