Final answer:
To determine the total cost of the game system with a 7% sales tax, convert 7% to a decimal (0.07) and multiply it by the original cost ($290.00) to get the sales tax amount ($20.30), which is then added to the original cost to get the total cost of $310.30.
Step-by-step explanation:
To find the total cost of the game system with tax, we first need to calculate the amount of sales tax. To do this, we convert the percent to a decimal and then multiply by the total cost of the game system. A sales tax rate of 7% is equivalent to 0.07 in decimal form.
The calculation would look like this:
Sales tax = $290.00 × 0.07 = $20.30
Now, add the sales tax to the original cost to find the total cost:
Total cost = Original cost + Sales tax
Total cost = $290.00 + $20.30 = $310.30
Therefore, the total cost of the game system with sales tax is $310.30.