To find the total cost multiply $12 x 180 square feet
Ax^2+bx+c
if a=1, then
take 1/2 of b and square it
w^2-4w+c
b=-4
-4/2=-2, (-2)^2=4
add that
w^2-4w+4
(w-2)(w-2)
(w-2)^2
to make it into perfect squres, add 4
I'm believing you want question 3 answer if so:
a 3> -7
b. -8>-10
c. 12>-11
d. 7=7
e.-4<0
f.0<5
Answer:
B)infinitely many solutions
If the solution equals each other then there is no one solution
