Oil and gas production in a certain area dropped from 4 million barrels in 2000 to 1.9 million barrels in 2013. Assuming that the oil and gas production decreased at a constant rate, which of the following linear functions f best models the production in millions of barrels, t years after year 2000?
A. F(t) = 21/30t+4
B. F(t) = 19/130t+4
C. F(t)= -21/30t+4
D. F(t) = -19/130t+4
EXPLAIN WHICH ONE & WHY

it would be 6xy and -16xy.

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: )

step-by-step explanation:

answer: 2 answers

step-by-step explanation: the first one means to spread the product throughout the marketplace such that a large number of people can buy it.  

the second means the process of making a product or service available for the consumer or business user that needs it.

mark this brainliest and i will be glad to .