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A deli is offering two specials. The roast beef special gives a profit of [tex]\$2.30[/tex] per sandwich, and the turkey special gives a profit of [tex]\$3.10[/tex] per sandwich. The roast beef special uses two slices of bread and three slices of cheese. The turkey special uses two slices of bread and four slices of cheese. The deli has 120 slices of bread and 160 slices of cheese available for the specials. The deli wants to maximize its profit selling specials. Let [tex]x[/tex] represent the number of roast beef specials and [tex]y[/tex] represent the number of turkey specials.

What are the constraints for the problem?

A.
[tex]
\begin{array}{l}
2x + 2y \leq 120 \\
3x + 4y \leq 160 \\
x \geq 0 \\
y \geq 0
\end{array}
[/tex]

B.
[tex]
\begin{array}{l}
2x + 3y \leq 120 \\
2x + 4y \leq 160 \\
x \geq 0 \\
y \geq 0
\end{array}
[/tex]

C.
[tex]
\begin{array}{l}
2.3x + 3.1y \geq 0 \\
x \leq 120 \\
y \leq 160
\end{array}
[/tex]

D. [tex]2x + 2y \leq 120[/tex]

E. [tex]3x + 4y \leq 160[/tex]

F. [tex]2.3x \geq 3.1y[/tex]

Answer :

To determine the constraints for this problem, we need to consider the available resources and how they are used in each special:

1. Bread Usage Constraint:
Each sandwich, regardless of whether it's roast beef or turkey, uses two slices of bread. We have a total of 120 slices available. So, for the roast beef specials (represented by [tex]\( x \)[/tex]) and the turkey specials (represented by [tex]\( y \)[/tex]), the constraint for bread is:
[tex]\[
2x + 2y \leq 120
\][/tex]

2. Cheese Usage Constraint:
The roast beef sandwich uses three slices of cheese, and the turkey special uses four slices of cheese. With 160 slices of cheese available, the cheese constraint is:
[tex]\[
3x + 4y \leq 160
\][/tex]

3. Non-negativity Constraints:
We cannot make a negative number of sandwiches, so both [tex]\( x \)[/tex] and [tex]\( y \)[/tex] must be non-negative:
[tex]\[
x \geq 0
\][/tex]
[tex]\[
y \geq 0
\][/tex]

Putting all these constraints together, we have:

- Bread Constraint: [tex]\( 2x + 2y \leq 120 \)[/tex]
- Cheese Constraint: [tex]\( 3x + 4y \leq 160 \)[/tex]
- Non-negativity for Roast Beef Specials: [tex]\( x \geq 0 \)[/tex]
- Non-negativity for Turkey Specials: [tex]\( y \geq 0 \)[/tex]

With these constraints, the deli can maximize its profits while ensuring it doesn't exceed its supply of bread and cheese.

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