20x+20y=900
I hope that helps. You'll have to isolate each variable. X= kite, y=website.
Step-by-step explanation:
The equation that Kaitlyn solved is as follows :
-5.4+x=12.2
The steps to solve it as follows :
Step 1. Add 5.4 to both sides,
-5.4+x+5.4=12.2+5.4
Step 2. 5.4 will cancel out as both have opposite signs
x=17.6
But Kaitlyn solved it as :
5.4.x=6.8
She has multiplied -5.4 and x which is wrong. The correct answer is 17.6.
For this case we must find an expression equivalent to:

According to the unit circle,
is in the third quadrant and equals 210 degrees.
Then, we must find an expression equivalent to:

We have to:

It is in the fourth quadrant and is equivalent to 330 degrees, according to the unit circle.

Answer:
Option D