Let x be the number of days.
If Ashley posts 17 status updates each day, then after x days Ashley posts 17x status updates.
If Roberto posts 21 status updates each day, then after x days Roberto posts 21x status updates.
Part A. The combined number of posts for Ashley and Roberto after x days is:
17x+21x.
Part B. The difference between number of posts for Ashley and Roberto after x days is:
21x-17x.
A reflection over the line y=x implies exchanging the x and y coordinates of a point. For example if you take a generic point (a,b) then its reflection over y=x is (b,a). Our point is (-1,3) so its reflection over y=x is the point (3,-1).
Then we have to translate it two units left. Translating a point left means that we are moving towards negative x values so we need to substract 2 from the x coordinate:
![(3,-1)\rightarrow(3-2,-1)=(1,-1)](https://tex.z-dn.net/?f=%283%2C-1%29%5Crightarrow%283-2%2C-1%29%3D%281%2C-1%29)
Finally we have to translate it 1 unit up towards positive y values so we have to add 1 to its y coordinate:
![(1,-1)\rightarrow(1,-1+1)=(1,0)](https://tex.z-dn.net/?f=%281%2C-1%29%5Crightarrow%281%2C-1%2B1%29%3D%281%2C0%29)
And these are the final coordinates. In the following picture you have the points you get after each step (from A to D) with the y=x line in blue:
Terms
7
-5x
1
Like Terms
7
1
Coefficients
-5
Constants
7
-1
3/6 = 1/2
3/6 divided by 3
Answer:
![Amount (Gold) = 1.833g](https://tex.z-dn.net/?f=Amount%20%28Gold%29%20%3D%201.833g)
Step-by-step explanation:
Given
![Amount = Rs11000](https://tex.z-dn.net/?f=Amount%20%3D%20Rs11000)
per gram
Required
The amount of Gold
To do this, we simply divide the amount paid by the unit price of gold.
So, we have:
![Amount (Gold) = \frac{Rs11000}{Rs6000/g}](https://tex.z-dn.net/?f=Amount%20%28Gold%29%20%3D%20%5Cfrac%7BRs11000%7D%7BRs6000%2Fg%7D)
![Amount (Gold) = \frac{11000}{6000}g](https://tex.z-dn.net/?f=Amount%20%28Gold%29%20%3D%20%5Cfrac%7B11000%7D%7B6000%7Dg)
![Amount (Gold) = 1.833g](https://tex.z-dn.net/?f=Amount%20%28Gold%29%20%3D%201.833g)