Describe all the errors this student made when solving using the quadratic formula

Starting at home, emily traveled uphill to the hardware store for 606060 minutes at just 666 mph. she then traveled back home along the same path downhill at a speed of 121212 mph. what is her average speed for the entire trip from home to the hardware store and back?

How do i find the missing angle measure in a polygon

Tom travels between the two mile markers shown and then finds his average speed in miles per hour. select the three equations that represent this situation.