Answer:
f(-1) = 2x - 1
f(-1) = 2(-1) - 1
f(-1) = -2 - 1
f(0) = 2x - 1
f(0) = 2(0) - 1
f(0) = 0 - 1
f(1) = 2x - 1
f(1) = 2(1) - 1
f(1) = 2 - 1
f(2) = 2x - 1
f(2) = 2(2) - 1
f(2) = 4 - 1
