Answer:
The painting is 
Step-by-step explanation:
From the question we are told that
The amount of carbon present after t year is
{Note ; This is the function }
Here
is the amount of carbon-14 after time t
the original amount of carbon-14
Now given that the paint as at now contain 27% of the original carbon-14
Then it mean that

So the equation is represented as

=> 
=> 
=> 
=> 
=> 
This one is hard but I give it ago: so if Brad has got 4 chains and he made that in 1 hour and Velma can only make 3 chains in 1 hour but she has made 6 already. That means Velma has used 2 hours to make them 6 chains. So Brad if he does 2 hours that makes 12 chains,Then it Velma does 2 hours more she makes 12 chains as well. So they have the same amount of number.
Hopefully that helps :D
Answer:D. trends
Step-by-step explanation:
Step-by-step explanation:
Discriminant = 16k² - 4(2)(-5k)
Since 16k² + 40k < 0, 2k² + 5k < 0, k(2k + 5) < 0.
Therefore -5/2 < k < 0.
D. is a difference of perfect squares because both terms 25x^2 and 36 is a square (5, x, and 6). Also, difference of perfect squares MUST have a minus sign.