Three families equally share 1/3of a community garden space. How much of the community garden space does each family use?

Ineed to know the answer to this algebra question.

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1

The accompanying data represent the miles per gallon of a random sample of cars with a three-cylinder, 1.0 liter engine. (a) compute the z-score corresponding to the individual who obtained 42.342.3 miles per gallon. interpret this result.