This is a question about volume! Please help!!

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters .

What is the slope of the line that contains the points (4,8) and (9,8)? what type of line is it?

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.