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anonymous

  • one year ago

Determine the solution to f(x) = g(x) using the following system of equations: f(x) = 3x + 12 g(x) = −9.5x − 13

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  1. campbell_st
    • one year ago
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    as it says... let f(x) = g(x) so 3x + 12 = 9.5x -13 and solve for x

  2. anonymous
    • one year ago
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    x=-2 x=-3 x=4 x=5

  3. anonymous
    • one year ago
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    those are the choices

  4. anonymous
    • one year ago
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    so do i swap f(x) and g(x) or do i get rid of f(x) and replace it with g(x)?

  5. campbell_st
    • one year ago
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    well start by adding 13 to both sides of the equation 3x + 12 = 9.5x - 13 + 13 + 13 -------------------- 3x + 25 = 9.5x -3x -3x subtract 3x from both sides of the equation --------------- 25 = 6.5x now solve for x..... you may like to check you have f(x) and g(x) correct as the solution is a decimal...

  6. anonymous
    • one year ago
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    i got 3.84615384615

  7. anonymous
    • one year ago
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    so do i just round up to 4?

  8. anonymous
    • one year ago
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    or keep it at 3

  9. campbell_st
    • one year ago
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    that's why I asked if you had entered f(x) and g(x) correctly

  10. anonymous
    • one year ago
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    i copy and paste it ill check still tho

  11. campbell_st
    • one year ago
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    if you round the answer, it goes to 4

  12. anonymous
    • one year ago
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    ik that and im guessing thats what i need to do because i checked and its right

  13. campbell_st
    • one year ago
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    ok... good luck

  14. anonymous
    • one year ago
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    wait you for got to put 9.5x as a negative when you solved it

  15. anonymous
    • one year ago
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    i just noticed

  16. anonymous
    • one year ago
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    ohh wait its still 6.5 because you have to combine them :/

  17. anonymous
    • one year ago
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    -4 isnt a choice...

  18. anonymous
    • one year ago
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    its either b or c

  19. campbell_st
    • one year ago
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    hold on I'll redo it correctly and now it makes more sense 3x + 12 = -9.5x - 13 +13 +13 add 13 ------------------ 3x + 25 = -9.5x -3x -3x subtract 3x from both sides --------------- 25 = -12.5x now the solution should make sense

  20. anonymous
    • one year ago
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    so its a?

  21. anonymous
    • one year ago
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    YAY A WAS RIGHT I GOT A 100 ON HOMEWORK!

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