To find the cost of the large box that contains 25 bottles of drinks, you can multiply the number of bottles by the price of each bottle.
Cost of one bottle = $1.75
Number of bottles in a box = 25
Now, calculate the total cost:
\[ \text{Total cost} = \text{Number of bottles} \times \text{Cost per bottle} = 25 \times 1.75 \]
Calculating that:
\[ 25 \times 1.75 = 43.75 \]
Thus, the total cost of the large box is:
\[ x = 43.75 \]
So the final answer is:
\[ \text{$}43.75 \]