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8_murik_8 [283]
3 years ago
14

Solve for 7 + y = -2 -3x

Mathematics
2 answers:
MrRa [10]3 years ago
8 0

For x:

-2-3x=7+y             <em>add 2 to both sides</em>

-3x=9+y          <em>divide both sides by (-3)</em>

\boxed{x=-3-\dfrac{1}{3}y}


For y:

7+y=-2-3x      <em>subtract 7 from both sides</em>

\boxed{y=-9-3x}

sukhopar [10]3 years ago
7 0

Answer:

y = -3x-9

Step-by-step explanation:

To solve for y, we need to subtract 7 from each side

7-7 + y = -2-7 -3x

y = -3x-9

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A company makes and sells charm bracelets. The cost of producing x bracelets is represented by the function C(x) = 180 + 8x. The
alexdok [17]

Answer:

The correct answer would be, No of bracelets the company must sell to break even would be 15

Step-by-step explanation:

Revenue is given by the function as:

R(x) = 20x

and Cost is given by the function as:

C(x) = 180 + 8x

Let the function P(x) represent the profit earned.

We know that Profit is equal to Revenue - Cost

i-e  

Profit = Revenue - Cost

So,

P(x) = R(x) - C(x)

Now substituting the Revenue and cost values in the above equation.

P(x) = 20x - (180 + 8x)

P(x) = 20x -180 -8x

P(x) = 20x - 8x -180

P(x) = 12x - 180

Now if we want to find out the break even point, we would consider profit as Zero, 0. So substituting 0 in the above equation for Profit, we will get:

0 = 12x - 180

12x = 180

x = 180/12

x = 15

So the break even point will be 15 bracelets.

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