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Nookie1986 [14]
3 years ago
7

Find f(-2) for the function f(x)= 3x2-2x+7

Mathematics
1 answer:
4vir4ik [10]3 years ago
4 0

Answer:

f( - 2) = 23

Step-by-step explanation:

f(x) = 3 {x}^{2}  - 2x + 7 \\ plug \: x =  - 2 \\ f( - 2) = 3 {( - 2)}^{2}  - 2( - 2)+ 7 \\  = 3 \times 4 + 4 + 7 \\  = 12 + 11 \\  \huge \red{ \boxed{ f( - 2) = 23}}

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if the store purchased a kitchen appliance for $42 and sold it for $58.80, what was the percent markup?
oksano4ka [1.4K]

Answer:

40%

Step-by-step explanation:

Percent markup = new price - original price/original price

Do the subtraction first.

58.80 - 42.00 = 16.80

Now do the division

16.8/42 = 0.40

Change the decimal to a percent by moving the decimal two place to the right.

0.40 = 40%

6 0
2 years ago
Is x+y=10 a direct variation?
arlik [135]
✡ Answer: True (yes) <span>✡

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Because we can determine its a direct variation just based upon the x and y.

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5 0
3 years ago
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10 points to the person who answers this whole thing and I will mark you as brainliest.
olga2289 [7]

Answer:

Step-by-step explanation:

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4 0
3 years ago
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Paul [167]

Answer:

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5 0
3 years ago
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Answer:

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Step-by-step explanation:

8 0
3 years ago
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