One way to calculate the total tax is 0.05(50 + 40). The total tax is $

Answer 1

To calculate the total tax using the formula you provided, we first need to compute the expression inside the parentheses:

\( 50 + 40 = 90 \)

Next, we multiply that sum by the tax rate of 0.05:

\[ 0.05 \times 90 = 4.5 \]

Therefore, the total tax is $4.50.