Liam's bookstore sold 40 notebooks and 20 newspapers for a total of $130dollar sign, 130. A day later, the bookstore sold 8 notebooks and 4 newspapers at the same prices, for a total of $28dollar sign, 28.

Determine the quotient of the following expression. (15n^2-27n) / 3

Cynthia takes her dog to the park every 2 days. she bathes her dog every 7 days. if she took her dog to the park and bathed him today, how long will it be until she does both on the same day again?

Lv beethoven software supplies customized software to a managed healthcare system. lv beethoven software's costs for the software is $1,723,000. lv beethoven software sells the software to the healthcare system for $3,816,981.10. overhead expenses are estimated at 47% of the selling price. what is lv beethoven software's net profit to the nearest dollar?