To find the total cost of the snack purchase, we need to add the individual costs of each item:
- Cost of Snickers bar: \( \frac{3}{4} \) dollar = $0.75
- Cost of bag of chips: $1.25
- Cost of hot dog: $2.23
Now let's add them together:
\[ 0.75 + 1.25 + 2.23 \]
Adding these values step by step:
- \( 0.75 + 1.25 = 2.00 \)
- \( 2.00 + 2.23 = 4.23 \)
Therefore, the total cost of your snack purchase is $4.23.
The correct answer is: $4.23.