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Dvinal [7]
2 years ago
5

Evaluate the function: f(x)=4x−2, find f(8)

Mathematics
1 answer:
valina [46]2 years ago
4 0

Answer:

f (8) = 30

Step-by-step explanation:

f(x)=4x-2\\\\f(8)=4(8)-2\\\\f(8)=32-2\\\\\boxed{f(8)=30}

Hope this helps.

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An item that was selling for $72.00 was reduced to $60.00. Find the percent decrease in price. Show all your work.
dsp73
The formula to figure out the percentage increase or decrease is: 
<span>(new - old) / old * 100% </span>

<span>new = 60 </span>
<span>old = 72 </span>

<span>(60 - 72) / 72 * 100% </span>
<span>-12 / 72 * 100% </span>
<span>= -1/6 * 100% </span>
<span>= -0.1666... * 100% </span>
<span>≈ -16.667% </span>

<span>Because it is negative, that's a decrease. </span>

<span>Answer: </span>
<span>A decrease of about 16.7%</span>
8 0
3 years ago
Make b the subject of the formula P=2a+b
Gelneren [198K]
In order to make b the subject of this equation, we must isolate it on the left side. We can do this by following these steps:

P = 2a+b

Subtract b from both sides

P - b = 2a+b-b

P-b=2a

Subtract P from both sides

P-b-P=2a-P

-b=2a-P

Now, we have isolated b, but it is negative. We can fix this by multiplying both sides of the equation by -1.

-(-b)=-(2a-P)

b=-2a+P

Which is your final answer.
b = -2a+P.
Hope that helped! =)
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Get ten of the packaged kind 
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3 years ago
Help please! very confused
Lera25 [3.4K]

Answer:

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Step-by-step explanation:

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Answer:

Step-by-step explanation:

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