Someone bought a car for $5,000. During the first year, its value depreciated by 20%. What was the value of the car after one year?

It took alice 5 5/6 hours to drive to her grandparents' house for . on the way home, she ran into traffic and it took her 7 3/8 hours. how much longer did the return trip take? write your answer as a proper fraction or mixed number in simplest form. the trip home took __hours longer. ?

How is working backward similar to solving an equation?

What is the value of the discrimination for the quadratic equation 0=×2+2+×2