Assuming a linear relationship between licenses issued and bears harvested, write an equation that relates the number of bears harvested to the number of licenses issued. Assume that when zero licenses are issued, zero bears are killed. In that case, what is the value of the y-intercept (the value of b)?

In the image, layer a is the topmost layer. layer c contains fossils from the precambrian era. layer b contains dinosaur fossils, and layer a contains fossils of mammals. which two statements are supported by this evidence? 1. mammals lived before the precambrian era. 2. dinosaurs and mammals existed in the precambrian era. 3. dinosaurs evolved after precambrian organisms. 4. precambrian organisms evolved after dinosaurs. 5. precambrian organisms were the first life-forms to become fossilized, according to this sample.