The quadratic equation 2x^2+bx+18=0 has a double root . find all values of b

Ruby and chung work together ruby lives 13 1/2 miles from work chung lives 2 1/6 miles beyond ruby how far from work does chung live

The last time i bought this product , it cost $20.00 but it looks like it cost 29. 60 today? what is the increase

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.