Calcmathlete 3 years ago Find the solution set of the inequality: |2x+5|+|4x+7|<30

1. Calcmathlete

2. ReiKacanja

6x+12<30 6x<18 x<3

3. Calcmathlete

4. Calcmathlete

Someone help!!!!!

5. pokemon23

aviation hs for the win ;D

6. ReiKacanja

lol, Wat, it is right. Answer is x<3. 100% sure

7. Calcmathlete

8. ReiKacanja

then are u sure the question is |2x+5|+|4x+7|<30

9. Calcmathlete

Wait, no ≤. Just <

10. Calcmathlete

Yes

11. ReiKacanja

ohhh i see. if you graph it, you find that x intercepts are 3 and -7 therefore x is between -7 - 3

12. pokemon23

13. Calcmathlete

Oh. I see. It splits into two inequalities because you can flip the sign and negate the second part.

14. ReiKacanja

yeah and @pokemon23 yes im a ninth grader, u?

15. pokemon23

same

16. ReiKacanja

what school u go to?

17. pokemon23

same hs

18. ReiKacanja

:D message me

19. pokemon23

i join the aviation lol

20. pokemon23

101

21. Calcmathlete

Hey Rei, are you good at logarithms?

22. ReiKacanja

no, my nine year education does not cover logarithms

23. Calcmathlete

Alright. Thanks for the help. :)

24. ReiKacanja

No problem

25. Taufique

@Calcmathlete

26. Calcmathlete

Thank you

27. Taufique

welcome...