answer:
To calculate the total cost of Juliana's purchase, we need to consider the cost of the nail polishes, the cost of the nail polish cleaner, and the sales tax.
1. Cost of the nail polishes: Juliana bought 3 bottles of nail polish for $5.95 each.
Total cost of nail polishes = 3 * $5.95 = $17.85
2. Cost of the nail polish cleaner: Juliana bought 1 nail polish cleaner for $1.50.
3. Sales tax: The sales tax rate is 7%.
Now, let's calculate the sales tax amount:
Sales tax amount = (Total cost of nail polishes + Cost of nail polish cleaner) * Sales tax rate
= ($17.85 + $1.50) * 0.07
= $19.35 * 0.07
= $1.3545
To find the total cost of Juliana's purchase, we add the cost of the nail polishes, the cost of the nail polish cleaner, and the sales tax amount:
Total cost = Total cost of nail polishes + Cost of nail polish cleaner + Sales tax amount
= $17.85 + $1.50 + $1.3545
= $20.7045
Therefore, the total cost of Juliana's purchase, including sales tax, is approximately $20.70.
alli <3