When the sum of a number and 4 is subtracted from 9 the result is 1

2x minus y equals 6, x plus y equals negative 3

The volume of the sun is approximately 1 × 10^18 cu km, while the volume of jupiter is approximately 1 × 10^15 cu km. which of the following is true? a. the volume of jupiter is approximately one thousand times the volume of the sun. b. the volume of jupiter is approximately one hundred times the volume of the sun. c. the volume of the sun is approximately one thousand times the volume of jupiter. d. the volume of the sun is approximately one hundred times the volume of jupiter.

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?