14m - (5 + 8m) can some one help me solve this

Ineed asap graph the system of equations 2x+y=5; 14+7y=35

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

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.