The price of a laptop is fixed 20% above its cost price and sold it at 13% discount to gain rs 1980 . How much should the customer pay for it ??

Elena and her husband marc both drive to work. elena's car has a current mileage (total distance driven) of 15,000 and she drives 23,000 miles more each year. marc's car has a current mileage of 46,000 and he drives 9,000 miles more each year. will the mileages for the two cars ever be equal? explain.

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c