In 1987, the United Nations General Assembly passed a resolution that prohibited countries from buying oil from South Africa in an effort to persuade the nation to end the racist policies of apartheid. This is an example of a(n)

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?