In 1964, paleontologists discovered the bones of a new species of dinosaur. The age of the dinosaur was estimated using potassium-40 dating of rocks surrounding the bones. Analysis of these rocks indicated that 70.8% of th amount of the potassium-40 was still present. The decay model for potassium-40 is A = Age 0.52912t, where t is in billions of years. Let A = 0.708A, in this decay model and estimate the age of the bones of the dinosaur. The bones are approximately billion years old. (Type an integer or decimal rounded to four decimal places as needed.)