Please answer the questions before 12 am

Which of the following answers is 7/9 simplified? 7/9 2/9 11/9 2/7

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?

Which ordered pair is a solution of the equation? 2x+3y=10