Abigail buys a dress for $12 & a backpack for $10.50. She is also charged 9% sales tax on the dress only. Write an expression that represents total cost abigail had to pay
1.09(12 + 10.50)
Since the tax is only on the dress, I'd say
10.50 + 12.00*1.09
Oops! Thanks, Steve, for catching that.
To calculate the total cost that Abigail had to pay, we need to add the cost of the dress, the cost of the backpack, and the sales tax on the dress.
Let's break it down step by step:
1. Cost of the dress: $12
2. Cost of the backpack: $10.50
3. Sales tax on the dress: 9% of $12
To find the sales tax amount, we can multiply the cost of the dress ($12) by the sales tax rate (9%) and then convert it to a decimal by dividing by 100:
Sales tax = (9/100) * $12
Now, we can write the expression to represent the total cost Abigail had to pay:
Total cost = Cost of the dress + Cost of the backpack + Sales tax on the dress
Total cost = $12 + $10.50 + (9/100) * $12
Simplifying the expression:
Total cost = $12 + $10.50 + (0.09) * $12
Total cost = $12 + $10.50 + $1.08
Total cost = $23.58
Therefore, the expression that represents the total cost Abigail had to pay is $23.58.