Do the following regressions satisfy the linearity condition? Why or why not? Explain in

much detail. $($think of logarithmic and similar transformations $($this was a hint$)).$ Explain how

you would explain the exact interpretation of all estimated coefficients in all three models

$($assuming of course that the model can be estimated using OLS techniques$)?$

a$)Y=\frac{K}{1+Ae}$

b$)Y=\frac{a}{x}+lon$

c$)Y={}_1^{x_1^a}+e$