Hello i am new here how are you doing
Hi there!
First we need to remember the following.

Now substitute both of the formulas.

Work out the parenthesis.

And finally collect terms.

~ Hope this helps you!
Answer:
what you look like?
Step-by-step explanation:
Answer:x+2y-12=0
Step-by-step explanation:
3x+6y=36
-36. -36
3x+6y-36=0
Divide by 3 to get
X+2x-12=0
Answer:
percent* base = amount
.2 * x = 1.80
x = 1.80/.2
x= $9
Step-by-step explanation: