Problem 46 of 7
Build an explicit arithmetic sequence model for The initial position is -2 and it moves 3 units to the right each second.
Hints
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
connect term number to linear expression.
Hidden until you reveal it.
Context must identify first term and common difference.
Enter your answer
No answer yet
Correct
Your answer is equivalent to the expected form.
Solution
Walkthrough
Walkthrough shown
Full solution stays hidden until you ask for it.
1. Identify a_1 and common difference d.
2. Use a_n = a_1 + d(n - 1).
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Using n instead of n-1 if first term indexing is stated and shifts answer incorrectly.