Step 1 :Given the original price of an item as \$145 and the total price with tax as \$151.41.
Step 2 :First, calculate the tax amount by subtracting the original price from the total price. This gives us \$151.41 - \$145 = \$6.41.
Step 3 :Next, calculate the tax rate by dividing the tax amount by the original price and multiplying by 100. This gives us \((\$6.41 / \$145) * 100 = 4.42\%\).
Step 4 :Final Answer: The tax amount is \(\boxed{\$6.41}\) and the tax rate is \(\boxed{4.42\%}\).