What two numbers equal 9 and multiply to 16

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose

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)

Round each decimal to the nearest hundredth