A chemistry teacher is preparing the 6 stations of a science laboratory. Each station will either have Experiment A materials or Experiment B materials, but not both. Experiment A requires 3 tablespoons of salt, and Experiment B requires 4 tablespoons of salt. If \(x\) is the number of stations that will be set up for Experiment A and the remaining stations will be set up for Experiment B, which of the following expressions represents the total number of tablespoons of salt required?

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The number of tablespoons of salt required for Experiment A may be a bit easier to find. Since we have \(x\) number of stations made for Experiment A and Experiment A requires 3 tablespoons of salt,

$$x \cdot 3 $$ $$ =3x $$

If there are \(x\) Experiment A stations, the remaining stations must correspond to Experiment B. Each Experiment B station requires 4 tablespoons of salt.

$$ (6-x) \cdot 4 $$ $$ =24-4x $$

Adding these together,

$$ 3x+(24-4x) $$ $$ = \boxed{24-x} $$

Whichever the model, it should be appropriate for arbitrary values. For example, let's take the hypothetical scenario of \(x=1\).

In this scenario, we will have \(1\) Experiment A station. There will be \(6-1=5\) Experiment B stations. Using the appropriate number of tablespoons of salt for each station,

$$ \text{total salt}=1\cdot3 + 5\cdot4 $$ $$ = 3+20 $$ $$ = 23 $$

We see that only the correct option \(\boxed{24-x}\) works in this given situation \((x=1)\).