Answer:
you can use any 2 you want. like (10,60) and (5,40)
Step-by-step explanation:
We are given the system of equations -:

Since the second equation is y-isolated equation. It can be substituted as y = 6x+22 in the first equation.

Expand 3 in the expression so we can combine like terms and isolate x-variable.

Then combine like terms.

Get rid of 66 from the left side by subtracting both sides by itself.

To finally isolate the variable, divide both sides by 20 so we can leave x only on the left side.

Simplify to the simplest form.

Normally, we have to find the y-value too but since we only find x-value. The answer is x = -4.
Answer
I hope this helps! If you have any questions or doubts regarding my answer, explanation or system of equations, feel free to ask!
Answer:
![1\frac{7}{9} =\frac{16}{9} =[\frac{4}{3}] ^{2}](https://tex.z-dn.net/?f=1%5Cfrac%7B7%7D%7B9%7D%20%3D%5Cfrac%7B16%7D%7B9%7D%20%3D%5B%5Cfrac%7B4%7D%7B3%7D%5D%20%5E%7B2%7D)
Step-by-step explanation:
First you need to find how much 20% of $18.50 is. To do this, you need to multiply 18.50 by 20% which in decimal form is 0.2
$18.50x0.2=$3.70
Now you need to subtract $3.70 from $18.50
$18.50-$3.70=$14.80
Now that you have the new price, you need to find 6.75% of it to get the sales tax, so you multiply $14.80 by 6.75%, which is 0.0675 as a decimal.
$14.80x0.0675=$0.999 or $1
Now you add the sales tax to $14.80
$14.80+$1=$15.80 or $14.80+$0.999=$15.799