If y=12 when x=6 determine y when x=18

Which expression is equivalent to the expression shown?

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?

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.