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abruzzese [7]
3 years ago
7

Help ASAP!!!!Evaluate f (x) = 4x + 3x2 – 5 when x = -2.-49​

Mathematics
1 answer:
Alisiya [41]3 years ago
8 0

Answer:

−2f+15

Step-by-step explanation:

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saul85 [17]

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Step-by-step explanation:

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6 0
3 years ago
Read 2 more answers
A jeweler wants to minimize business costs and has found that the average cost in dollars per necklace is given by C(x)=0.5x^2-7
Vika [28.1K]

Answer:

The maximum cost is 41 dollars per necklace.

Step-by-step explanation:

The average cost in dollars/necklace is given by :

C(x)=0.5x^2-7x+65.5  .....(1)

Where

x is the number of necklaces that are created

To maximize the cost, find the value of x by putting dC/dx = 0

\dfrac{d}{dx}(0.5x^2-7x+65.5)=0\\\\x-7=0\\\\x=7

Now put the value of x = 7 in equation (1).

C(x)=0.5(7)^2-7(7)+65.5\\\\=41\ \text{dollars per necklace}

Hence, the maximum cost is 41 dollars per necklace.

8 0
3 years ago
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