Answer:
I believe it is y = 190(1.15)x
Explanation:
You are starting at 190 and increasing by 15% (1.15)
Sedimentary Rock
Here's Why:
Fossils also form from molds and casts. If an organism completely dissolves in sedimentary rock, it can leave an impression of its exterior in the rock, called an external mold.
I got this information from http://www.livescience.com/37781-how-do-fossils
I hope this helps:)