Answer:
y = 4
Step-by-step explanation:
First we want to raise -1 to the power of 2
y = 2 * 1 - 5 * -1 - 3
Multiply
2 - 5 * -1 - 3
y = 2 + 5 - 3
y = 7 - 3
y = 1/2x -12
50.27 b/c pi is multiplyed by raduis^2