Answer the following questions for the price-demand equation. \[ p+0.002 x=50 \] (A) Express the demand $x$ as a function of the price $p$. \[ x= \]

Step 1 ：The given price-demand equation is \(p+0.002x=50\).

Step 2 ：We need to express the demand \(x\) as a function of the price \(p\).

Step 3 ：To do this, we subtract \(p\) from both sides of the equation to get \(0.002x = 50 - p\).

Step 4 ：Then, we divide both sides of the equation by \(0.002\) to isolate \(x\).

Step 5 ：This gives us the function \(x = 25000 - 500p\).

Step 6 ：So, the demand \(x\) as a function of the price \(p\) is \(x= \boxed{25000 - 500p}\).