An item is priced at $13.73. If the sales tax is 7%, what does the item cost including sales tax?

To calculate the total cost of the item including sales tax, you can follow these steps:

1. Calculate the sales tax amount by multiplying the item price by the sales tax rate.
2. Add the sales tax amount to the original price.

Here’s how you do it:

1. Original price of the item: $13.73
2. Sales tax rate: 7% = 0.07

Sales tax amount: \[ \text{Sales tax amount} = \text{Original price} \times \text{Sales tax rate} = 13.73 \times 0.07 = 0.9611 \]

3. Total cost including sales tax: \[ \text{Total cost} = \text{Original price} + \text{Sales tax amount} = 13.73 + 0.9611 \approx 14.69 \]

So the total cost including sales tax is approximately $14.69.

The correct answer is B. $14.69.