The original price of a pair of shoes is $42. the sale price is 20% off the original price. what is the amount off the original price?

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9

Juanita wade's new car has an msrp of $28,902.11 including title and processing fees. the premier package which includes surround sound and dvd player costs three times the amount of the in-style package which includes leather seats and select wheels. the total cost of her new car was $34,290.08 which included the 6.5% sales tax. find the cost of the premier package to the nearest cent.