35% of 15 is what number

Six random samples were taken each year for three years. the table shows the inferred population for each type of fish for each year.

What are the domain and range of the function below? a) domain: (-4,0) range: [-2,infinity) b) domain: (-3,0) range: [-2,infinity) c) domain: (-infinity,infinity) range: [-2, infinity) d) domain: [-2,infinity) range: (-infinity,infinity)

If the figures below are similar give the scale factor of figure a to figure b