Which of the following functions y(x)y(x)y(x) is a solution to y′=y−3y' = y - 3y′=y−3?
y=3−2exy = 3 - 2e^xy=3−2ex
y=3+exy = 3 + e^xy=3+ex
y=1+2exy = 1 + 2e^xy=1+2ex
y=ex−3y = e^x - 3y=ex−3