If something was regularly priced at $60 and was on sale for 30% off. the sales tax was 9%. what is the total coast including the sales tax?

$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.

the perimeter is increased by a factor of 2

22 and 22

step-by-step explanation:

10 plus 12 equals 22.

12 plus 10 also equals 22 because regardless of what order they're in, they're gonna equal the same thing.