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anonymous

  • one year ago

Please help! MEDAL + FAN! (fairly easy question) For the graph below, what should the domain be so that the function is at least 200?

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  1. anonymous
    • one year ago
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  2. anonymous
    • one year ago
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    a. −5 ≤ x ≤ 20 b. 0 ≤ x ≤ 15 c. x ≥ 0 d. All real numbers I'm really not sure what the answer is. I think it's A but another post said B, so I'm just confused. I suck at determining domains.

  3. anonymous
    • one year ago
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    Is it B?

  4. triciaal
    • one year ago
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    the domain is the set of x values that satisfies the function

  5. triciaal
    • one year ago
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    you want y to be 200 or more find the line y = 200 then read the set of x

  6. triciaal
    • one year ago
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    yes B

  7. anonymous
    • one year ago
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    Oh, so it's 15 because it hits the same line as 200 on the parabola?

  8. triciaal
    • one year ago
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    domain set of values 0 to 15 yes 15 included because it y at least 200 when x = 15 y = 200 at least means the lowest value allowed and includes what is more than that value

  9. anonymous
    • one year ago
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    Oh okay! Thank you so much! :D

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