The owner of a deli wants to purchase at least 15 more pounds of oven-baked turkey than of roast beef. Write the constraint using t for pounds of turkey and r for pounds of roast beef.

The amount of turkey purchased is at least 15 + the amount of beef purchased.

t >= 15 + r

To write the constraint, we need to express the relationship between the pounds of oven-baked turkey (t) and roast beef (r) that the deli owner wants to purchase.

The owner wants to purchase at least 15 more pounds of oven-baked turkey than roast beef. This means that the pounds of turkey should be greater than or equal to the pounds of roast beef plus 15.

Therefore, the constraint can be written as:

t ≥ r + 15