Final answer:
The sales tax on a computer costing $899.00 with a 7% sales tax rate is $62.93. This is calculated by converting the tax rate to a decimal (0.07) and multiplying it by the cost of the computer.
Step-by-step explanation:
To calculate the sales tax on a computer that costs $899.00 with a sales tax rate of 7%, first convert the percent to a decimal. The decimal form of 7% is 0.07 (since 7% = 7/100 = 0.07). Next, multiply the price of the computer by this decimal value to find the amount of sales tax:
$899.00 Ă— 0.07 = $62.93
Therefore, the sales tax on the computer is $62.93.