Wich equation shows the result of substituting and expression for y from the first equation for the given system. Y=x+5. Y-2x=2

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

I’m confused on how to work the pie charts

Agallon of apple juice cost $7 a pack of eight 4.23oz box of apple juice $2.39 which is a better deal