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# Partial Derivative with Interaction

EMETRC-XXMXJP

What is the marginal effect of $z$ on $y$ for the following function:

$$y = \beta_0 + \beta_1x + \beta_2xz + \beta_3z \ ?$$

A

$0$

B

$\beta_3$

C

$\beta_0+\beta_1+\beta_2$

D

$\beta_3+\beta_2 x$

E

$\beta_1+\beta_2z$