P = 2a + b + c
Subtract 2a + b on both sides
c = P - (2a+b)
c = P - 2a - b
Hope that helps :)
Standard form for circle with radius r and center (h,k) is
(x-h)^2+(y-k)^2=r^2
r=36
center at -2,-7
(x-(-2))^2+(y-(-7))^2=36^2
(x+2)^2+(y+7)^2=1296
firts option
V-10=-3
add 10 by both sides (opposite of -10)
v= 7
I don’t really get that sorry I would love to help but don’t know what that mean.