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anonymous

  • one year ago

A food packet is dropped from a helicopter and is modeled by the function f(x) = −12x2 + 19200. The graph below shows the height f(x), in feet, of the food packet at different times x, in seconds: Use the graph to determine the reasonable domain of f(x) based on the context. All real numbers x ≤ 19200 −40 ≤ x ≤ 40 0 ≤ x ≤ 40

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  1. anonymous
    • one year ago
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  2. anonymous
    • one year ago
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    @Loser66

  3. anonymous
    • one year ago
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    Hey can you help me out?

  4. Loser66
    • one year ago
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    What do you think?

  5. anonymous
    • one year ago
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    im not sure, i was thinking maybe A, but im bad at math

  6. Loser66
    • one year ago
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    |dw:1437400145854:dw|

  7. Loser66
    • one year ago
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    when something falls, does it stop at the ground or go under the ground?

  8. anonymous
    • one year ago
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    It stops at the ground

  9. Loser66
    • one year ago
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    Yes, so, although the graph passes the x axis, in fact, when it hits the ground, the function stop working, right?

  10. anonymous
    • one year ago
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    right

  11. Loser66
    • one year ago
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    hence, from the right, it stops here. |dw:1437400344228:dw|

  12. Loser66
    • one year ago
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    From the left, when does it start?

  13. anonymous
    • one year ago
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    Idk i cant really see the graph

  14. anonymous
    • one year ago
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    0?

  15. Loser66
    • one year ago
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    |dw:1437400421399:dw|

  16. anonymous
    • one year ago
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    -40

  17. Loser66
    • one year ago
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    nope, the graph starts at -40, but the food package start falling at 0

  18. anonymous
    • one year ago
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    Ohh okay

  19. Loser66
    • one year ago
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    |dw:1437400509562:dw|

  20. Loser66
    • one year ago
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    Hence from the left it is \(0\leq x\)

  21. anonymous
    • one year ago
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    D?

  22. Loser66
    • one year ago
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    Combine, what do you get?

  23. Loser66
    • one year ago
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    YEEEEEEEEEEEES

  24. anonymous
    • one year ago
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    YYAAAY

  25. anonymous
    • one year ago
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    thankyou so much, that one was really hard

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