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4 years ago

PLEASE HELP TRYING TO MAKE HONOR ROLL

2 answers:

7 0

7 x n + 7 because if there is a an then that means that the numbers that they show you have to write them backwards like the answer I gave you!

slega [8]4 years ago

4 0

Hello

Seven more than the product of 7 and a number

----------------------------------------------------------------------

7 x n + 7

Seven = 7

More than = Addition while also switching it around

Product = Multiplication

A number = The variable / n

Hope this helps!

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QUESTION 3 [10 MARKS] A bakery finds that the price they can sell cakes is given by the function p = 580 − 10x where x is the nu

Harman [31]

Answer:

(a)Revenue function, $R(x)=580x-x^2$

Marginal Revenue function, R'(x)=580-2x

(b)Fixed cost =900 .

Marginal Cost Function=300+50x

(c)Profit, $P(x)=-35x^2+280x-900$

(d)x=4

Step-by-step explanation:

Part A

Price Function $= 580 - 10x$

The revenue function

$R(x)=x\cdot (580-10x)\\R(x)=580x-x^2$

The marginal revenue function

$\dfrac{dR}{dx}= \dfrac{d}{dx}(R(x))=\dfrac{d}{dx}(580x-x^2)=580-2x\\R'(x)=580-2x$

Part B

(Fixed Cost)

The total cost function of the company is given by $c=(30+5x)^2$

We expand the expression

$(30+5x)^2=(30+5x)(30+5x)=900+300x+25x^2$

Therefore, the fixed cost is 900 .

Marginal Cost Function

If $c=900+300x+25x^2$

Marginal Cost Function, $\frac{dc}{dx}= (900+300x+25x^2)'=300+50x$

Part C

Profit Function

Profit=Revenue -Total cost

$580x-10x^2-(900+300x+25x^2)\\580x-10x^2-900-300x-25x^2\\$Profit,P(x)=-35x^2+280x-900$

Part D

To maximize profit, we find the derivative of the profit function, equate it to zero and solve for x.

$P(x)=-35x^2+280x-900\\P'(x)=-70x+280\\-70x+280=0\\-70x=-280\\$Divide both sides by -70\\x=4$

The number of cakes that maximizes profit is 4.

6 0

3 years ago

Help! I think this is correct but im unsure

sergejj [24]

The answer is the second option you are correct !

8 0

3 years ago

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What is the slope of the line graphed below

Solnce55 [7]

Slope is 1/3

Equation of the line is:

y = 1/3x - 8

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3 years ago

Approximate the square root to the nearest whole number 142

slamgirl [31]

The square root of 142 is 11.916

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3 years ago

A mini-cone has a diameter of 3 inches and holds 10 in3 of ice cream. A mega-cone holds 49.13 in3 of ice cream. If the cones hav

marissa [1.9K]

The answer would be D

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3 years ago