Solve system of equations using substitution:
1) 2x - y = 16
2y - x = -8

assign two variables and equations. solve.

jack and cameron are playing a game of paper football. by their rules, you can score a 5-point touchdown or a 7-point touchdown. in the game, there have been 13 touchdowns scored for a total of 71 points. how many of these touchdowns were 7-point touchdowns?

Plz me i need i will give a brain

If you answer 2+2 you will get over 80 points

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.