Final answer:
The total cost of an $890 computer with a 5.5% sales tax, rounded to the nearest cent, is $938.95.
Step-by-step explanation:
To calculate the total cost of a $890 computer with a 5.5% sales tax, we first convert the tax rate to decimal form by dividing by 100, which gives us 0.055. Then, we multiply this by the cost of the computer to find the sales tax amount:
$890 × 0.055 = $48.95
Next, we add the sales tax to the original price to find the total cost:
$890 + $48.95 = $938.95
Rounded to the nearest cent, the total cost is $938.95.