Pls someone help me fast

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?

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42

Ineed ! i can’t figure out this graph