Question

math help anyone!!

Answer 1

Well, a1 is the first number in the sequence, so you have only 2 options left.

Answer 2

Then, the formula with the \(a_n\) and the \(a_{n-1}\) tells you how to get the next number. Given the sequence 11, 8, 5, 2, ..., what do you have to do (every time) to get the next number?

Answer 3

subtract 3?

Answer 4

Yes, right! So to find \(a_2\), you have to subtract 3 from \(a_1\).
To find \(a_3\), you have to subtract 3 from \(a_2\).
To find \(a_4\), you have to subtract 3 from \(a_3\).
To find \(a_5\), you have to subtract 3 from \(a_4\).

To find \(a_n\), you have to subtract 3 from \(a_{n-1}\).

Answer 5

it it would be B

Answer 6

Right! Well done.