Pls help my child has no clue and this math is too hard for me to understand!!

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.

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

Siri can type 90 words in 40 minutes about how many words would you expect her to type in 10 minutes at this rate