-3y = x...so we sub in -3y for x in the other equation
-x + 7y = 70
-(-3y) + 7y = 70
3y + 7y = 70
10y = 70
y = 70/10
y = 7
so we sub in 7 for y in either of the original equations to find x
-3y = x
-3(7) = x
-21 = x
so ur solution is (-21,7)
By using my brain I can figure it out.
Answer:

Step-by-step explanation:
equation of a circle

we know the center is (-7, 3)
the radius is 2
we replace (h,k) with the center coordinates
and input the radius

simplify to this:

Answer:
A
Step-by-step explanation:
Answer:
12 ( x+3)
Step-by-step explanation:
We can factor a 12 out of each term
12 *x + 12*3
12 ( x+3)