Answer:
Step-by-step explanation:
T(x , y) = (-x -y, -x +y)
T(1, 0) = (-1, -1) = -1(1 , 0) -1(0 , 1)
T(0, 1) = (-1, 1) = -1(1 , 0) +1(0 , 1)
Therefore,
|T| = [-1 -1] = -2
T is invertible
In 4 months
If you keep subtracting 140nfrom 3440 u will get 2880 after you do that 4 times. If you keep adding 220 to 2000 you will get 2880 after you do it 4 times.
Option B is correct