For what values of k will x-4 be a factor of x^2+kx-52?

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.

Need on this geometry question. explain how you did it.

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?