Rough ER - protein synthesis, transport of proteins throughout the cell
Smooth ER - lipid synthesis and cell detoxification
<span>In both cases money is being taken away from her total amount. A negative negative is a positive, so you don't want any expression with a negative negative. This eliminates A, B, and D, leaving only C. In this expression, both times money is being taken away, making it correct.</span>
The answer will probably be b
