Answer:
$45.78
Step-by-step explanation:
Let's write out the required expression:
(1.00-0.30)($60)(1.09) = $45.78 (total cost, including tax)
Note that "30% off" translates into multiplying the original cost by 1.00 - 0.30, or 0.70. Thus, the reduced price is 0.70($60) = $42.
Multiplying this result by 1.09 produces an output which includes both pre-tax cost of the item and the tax itself.
