Use substitution. What is the solution to the system of equations? Use the drop-down menus to explain your answer. y = 12x + 2 2y = x + 4

What is the standard form of -5x^2+2x^4-11+x^3+3x

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.

Which of the following expressions is equal to 2x^2+8