Answer:
Below
I hope its not too complicated

Step-by-step explanation:




Answer:
See explanation
Step-by-step explanation:
First, convert this to standard form. By completing the square, you can do the following:


This is a circle with center (-1,-2), and radius 7. It looks like the one I graphed below. Hope this helps!
Answer:
-4
Step-by-step explanation:
-4 but not really sure
Answer:
1.29(30) +2
Step-by-step explanation:
First you do 1.29 times 30 that equals 38.7. Then you do 38.7 + 2 and you get 40.7. This means that the total cost is $40.70.
because 4x+20y=-36,so ( 4x+20y)/2=2x+10y=-18
(2x+10y)-(2x+5y)=-18-18
5y=-36
then y=-7.2
because 2x=18-5y
so x=(18-5y)/2=(18-5*(-7.2))/2=27