Answer
(a) $tax = \$6.72$
(b) The calculator's total cost is $\$102.72$
Work Step by Step
(a) To express a percent as a decimal, we can move the decimal point two places to the left.
$tax~rate = 7\% = 0.07$
We can calculate the tax.
$tax = (0.07)(\$96)$
$tax = \$6.72$
(b) We can calculate the total cost.
$cost = \$96 + \$6.72$
$cost = \$102.72$
The calculator's total cost is $\$102.72$
