Helppp please for my testtt

Me what is the value of x? showing work would be appreciated - ! : )

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

Cody started biking to the park traveling 15 mph, after some time the bike got a flat so cody walked the rest of the way, traveling 4 mph. if the total trip to the park took 6 hours and it was 46 miles away, how long did cody travel at each speed? solve using rate times time= distance