## ikoreanx3 2 years ago T(x)=230/x+60 +450/x+70 Find a simplified form of T(x) by adding the rational expressions in the function's formula. Then use this form of the function to find T(4).

1. mathstudent55

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2. ikoreanx3

yes.

3. ikoreanx3

4. Hope_nicole

cross multiply :)

5. mathstudent55

You need a common denominator which is (x + 60)(x + 70)

6. mathstudent55

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7. Ghazi_Jr

Mathstudent why did you give her the wrong answer

8. Hope_nicole

i would go with cross multiplying.

9. mathstudent55

@Ghazi_Jr Why am I wrong?

10. Hope_nicole

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11. mathstudent55

@Hope_nicole This is not an equation where one fraction equals the other. This is a sum of fractions.

12. Hope_nicole

13. mathstudent55

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14. mathstudent55

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15. mathstudent55

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16. ikoreanx3

Thank you, guys. :)

17. mathstudent55

wlcm

18. ikoreanx3

19. ikoreanx3

for T(x) =

20. mathstudent55

Just factor the numerator. 680x + 43100 = 20(34x + 2155)

21. mathstudent55

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