Ithink i got the right answer but i am not quite sure may someone me if i got the wrong answer need answer asap you

Aiden drives to school and back each day. the school is 16 miles from his home. he averages 40 miles per hour on his way to school. if his trip takes 1 hour, at approximately what speed does aiden drive home?

What are the solutions to the equation 4x2+3x=24-x

Asocial networking site currently has 400,000 active members, and that figure is predicted to increase by 32% each year. the following expression represents the number of active members on the site after t years.