Ellana already owns 9 necklaces, and additional neclaces are priced 2 for 1 dollar. How much money does Ellana need to spend on new necklaces in order to own a total of 49 necklaces?

Answer for 10 points show work you guys in advanced < 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.

Ineed to know the ordered pairs for this equation i need the answer quick because it’s a timed test