Final answer:
The sales tax rate in Nevada is approximately 9.9833%.
Step-by-step explanation:
The sales tax rate in Nevada can be calculated by finding the ratio of the total sales tax to the total cost of the items. The total sales tax is obtained by summing up the sales taxes charged on each item, which in this case is $0.4650 + $2.305 + $0.23 = $2.995.
The total cost of the items is obtained by summing up the prices of the items, which in this case is $10 + $10 + $10 = $30.
Finally, the sales tax rate is given by dividing the total sales tax by the total cost of the items and multiplying by 100: sales tax rate = (2.995 / 30) * 100% = 9.9833% (rounded to four decimal places).