Problem
The sales tax rate is \( 4.9 \% \). Finn buys a tablet priced at \( \$ 199.91 \). What is the tax amount? Round your answer to the nearest penny. What is his total cost including tax? Round your answer to the nearest penny.
Solution
Step 1 ：\text{Tax Amount} = \$199.91 * 0.049
Step 2 ：\text{Tax Amount} \approx \$9.80
Step 3 ：\text{Total Cost} = \$199.91 + \$9.80
Step 4 ：\text{Total Cost} \approx \$209.71
