Final answer:
To find the total cost of the loaf of bread including tax, multiply the cost of bread, $2, by the tax rate in decimal form, 0.04, which results in $0.08. Add this to the original cost to get the total cost of $2.08.
Step-by-step explanation:
To calculate how much money you need to pay for the bread including tax, you first need to determine the amount of tax to add to the base cost. You do this by converting the tax rate from a percentage to a decimal, then multiplying it by the cost of the loaf of bread. So, for a tax rate of 4%, you convert this to 0.04 (since 4% = 4/100). Then multiply the cost of the loaf of bread, $2, by the tax rate in decimal form.
$2 × 0.04 = $0.08
Next, you add the tax to the original cost of the bread to find the total cost:
$2 + $0.08 = $2.08
Therefore, you need to pay $2.08 for the loaf of bread including tax.