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Find the solution set for x + 3 > 8 if the replacement set is {0, 2, 5, 6, 10}.

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- Thread starter xowe
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- #1

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Find the solution set for x + 3 > 8 if the replacement set is {0, 2, 5, 6, 10}.

- #2

HallsofIvy

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If x= 0, then x+3= 0+3= 3. No, that's not larger than 8.

If x= 2, then x+3= 2+3= 5. No, that's not larger than 8.

If x= 5, then x+3= 5+3= 8. No, that's not LARGER than 8.

If x= 6, then x+3= 6+3= 9. Yes! That's larger than 8

If x= 10, then x+ 3= 10+3= 13. Yes! That's larger than 13.

The solution set is {6, 10}.

Another way to do this is to solve the inequality generally:

x+ 3> 8- subtract 3 from both sides: x> 5. The only members of the replacement set that are larger than 5 are 6 and 10: the solution set is {6, 10}.

- #3

HallsofIvy

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If x= 10, then x+ 3= 10+3= 13. Yes! That's larger than 13.

I meant, of course, "larger than 8".

- #4

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Ah, ha! Thank you, now I get it...xowe

- #5

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Its been 8 years since this was posted but it still helped me with my 8th grade math THANK YOU

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