The answer is D.-12 hope this helps.
Answer:
Index fossil, any animal or plant preserved in the rock record of the Earth that is characteristic of a particular span of geologic time or environment. A useful index fossil must be distinctive or easily recognizable, abundant, and have a wide geographic distribution and a short range through time.
Step-by-step explanation:
X greater than negative 1 over 6y plus negative 1 over 2
The answer for this is m
=
5.436564
v
2
?
