Find the cost of 12 items if the cost function is C(x) = 2x +12

Question

Find the cost of 12 items if the cost function is C(x) = 2x +12

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Thu Hương 3 days 2021-07-19T16:56:54+00:00 1 Answers 2 views 0

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    2021-07-19T16:58:13+00:00

    Answer:

    $36

    Step-by-step explanation:

    we need to find the cost of 12 items, and the function of determining the cost is C(x)=2x+12, where x is the number of items (the input value of the function)

    we know that there are 12 items, so in this function, x=12

    substitute x as 12 in the function; the x in C(x) also gets substituted as 12, as 12 is the input value and the value of C(x) is the output

    C(12)=2(12)+12

    multiply

    C(12)=24+12

    add

    C(12)=36

    that means, for 12 items, the cost will be $36

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )