Final answer:
The total amount Brianna paid, including tax, is $73.70. None of the options are correct.
Step-by-step explanation:
To find the total amount Brianna paid, we need to calculate the cost of the beads and string after the discounts, and then add the sales tax.
- Calculate the cost of 8 beads with a 20% discount: $8.99 x 8 x 0.8 = $57.52
- Calculate the cost of 2 strings with a 50% discount: $11.99 x 2 x 0.5 = $11.98
- Add the costs of the beads and string: $57.52 + $11.98 = $69.50
- Calculate the sales tax: $69.50 x 0.0605 = $4.20
- Add the sales tax to the total cost: $69.50 + $4.20 = $73.70
Therefore, the total amount Brianna paid, including tax, is $73.70.
Hence, none of the given options are correct.