Answer:
y=66 and x=24
Step-by-step explanation:
The general expression would be:

In an organism that is 20,000 years old (t = 20000), we would expect:

This menas there would be around 8.898% of carbon-14 remaining in the organism.
Answer:
x=16
Step-by-step explanation:
Answer:
18x - 12
Step-by-step explanation:
multiply each term in the parenthesis by the 6 outside ( distributive law)
6(3x - 2)
= (6 × 3x ) + (6 × - 2) = 18x +(- 12) = 18x - 12