Answer:
Step-by-step explanation:
the only correct choice is C
= multiplied each side by 2.5
Answer:
solve for k, k=-1
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable
After a thorough search, I found the same question on the internet. Please refer to the attached picture. If it's the same one with yours, then the answer is letter C -
The constant 10 refers to the cost of setting up the food stall even if no cheeseburger was sold.
It is like a fixed cost that is incurred by the food stall that they need to pay for not considering the sales or income they would earn.
hello
we are going to solve this question via substitution method
![\begin{gathered} 3x-4y=-5\ldots\text{equ}1 \\ x=y+2\ldots\text{equ}2 \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%203x-4y%3D-5%5Cldots%5Ctext%7Bequ%7D1%20%5C%5C%20x%3Dy%2B2%5Cldots%5Ctext%7Bequ%7D2%20%5Cend%7Bgathered%7D)
put equation 2 into equation 1
![\begin{gathered} 3x-4y=-5 \\ x=y+2 \\ 3(y+2)-4y=-5 \\ 3y+6-4y=-5 \\ -y+6=-5 \\ -y=-6-5 \\ -y=-11 \\ \text{divide both sides by -1} \\ -\frac{y}{-1}=-\frac{11}{-1} \\ y=11 \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%203x-4y%3D-5%20%5C%5C%20x%3Dy%2B2%20%5C%5C%203%28y%2B2%29-4y%3D-5%20%5C%5C%203y%2B6-4y%3D-5%20%5C%5C%20-y%2B6%3D-5%20%5C%5C%20-y%3D-6-5%20%5C%5C%20-y%3D-11%20%5C%5C%20%5Ctext%7Bdivide%20both%20sides%20by%20-1%7D%20%5C%5C%20-%5Cfrac%7By%7D%7B-1%7D%3D-%5Cfrac%7B11%7D%7B-1%7D%20%5C%5C%20y%3D11%20%5Cend%7Bgathered%7D)
put y = 11 into equation 1 or 2
with equation 1
put y = 11
![\begin{gathered} 3x-4y=-5 \\ y=11 \\ 3x-4(11)=-5 \\ 3x-44=-5 \\ 3x=-5+44 \\ 3x=39 \\ \text{divide both sides by 3} \\ \frac{3x}{3}=\frac{39}{3} \\ x=13 \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%203x-4y%3D-5%20%5C%5C%20y%3D11%20%5C%5C%203x-4%2811%29%3D-5%20%5C%5C%203x-44%3D-5%20%5C%5C%203x%3D-5%2B44%20%5C%5C%203x%3D39%20%5C%5C%20%5Ctext%7Bdivide%20both%20sides%20by%203%7D%20%5C%5C%20%5Cfrac%7B3x%7D%7B3%7D%3D%5Cfrac%7B39%7D%7B3%7D%20%5C%5C%20x%3D13%20%5Cend%7Bgathered%7D)
fro the calculations above, the solutions to the equations with the value of x and y are (13) and (11)
<em>This means that at some specific number of days the cost for Oceanview and Beachside will be the same.</em>
<h2 /><h2>
Explanation:</h2>
See the complete question in the attached file. In this exercise, we know that Oceanview charges $100 per day plus a one-time fee of $40. This can be represented by the following equation:
Total cost for Oceanview:
![c=100d+40](https://tex.z-dn.net/?f=c%3D100d%2B40)
Total cost for Beachside:
![c=110d](https://tex.z-dn.net/?f=c%3D110d)
Where:
![c:Represents \ the \ cost \\ \\ d:Represents \ the \ number \ of \ day](https://tex.z-dn.net/?f=c%3ARepresents%20%5C%20the%20%5C%20cost%20%5C%5C%20%5C%5C%20d%3ARepresents%20%5C%20the%20%5C%20number%20%5C%20of%20%5C%20day)
So we have to explain what the equation:
![110d=100d+40](https://tex.z-dn.net/?f=110d%3D100d%2B40)
represents in the context of the problem. We have used substitution in order to get that equation, so <em>this means that at some specific number of days the cost for Oceanview and Beachside will be the same.</em>
This value was calculated and we get that<em> the cost at the hotels will be the same after 4 days and it will be $440.</em>
<h2>
Learn more:</h2>
Linear equations: brainly.com/question/12412678
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