Which is the 19th term in the sequence : an = -2(n-3)?

answer choices:

19

-32

32

-44

To solve this problem, we can plug in the correct number to solve this problem.

Number N

So we can plug in 19 for the number n.

So our equation now is a19 = -2(19-3),

From this we can get 16*(-2) = -32.

So our answer would be -32

What is the first term of the sequence, because based on the equation given it is imposible for 19 to be the first term

No we kind of dont, thats the whole point of "n". This is an arithmetic sequence problem, and we can use that to solve the problem. We do not always need the first number. All you have to do is plug in 19 as the value as n. Its that simple.

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