Check each set that includes the number shown 5/9 natural numbers whole numbers integers rational numbers irrational numbers real numbers

How do i do this activity, is appreciated

Which representation has a constant of variation of -2.5

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?