If the sales tax on an item is 7%, the sales tax on an item costing d dollars can be found by the expression .07d. Determine the sales tax on a compact disk that cost $15.99.
15.99 x .07 = the sales tax
To determine the sales tax on a compact disk that costs $15.99, you can use the expression .07d, where d represents the cost of the item in dollars.
Step 1: Substitute the value of d into the expression.
.07d = .07 * $15.99
Step 2: Calculate the value of .07 * $15.99.
.07 * $15.99 = $1.1193
Step 3: Round the result to the appropriate number of decimal places.
The sales tax on a compact disk that costs $15.99 is approximately $1.12.