Question

Help please!

Answer 1

Please identify the first term of this sequence, as well as the common difference.

Answer 2

The common difference is 3
The first term of the sequence is -2

@mathmale

Answer 3

@mathmale

Answer 4

Good work. Yes, the first term is -2, and the common difference is 3.

I'd use the equation l = a + (n-1)d, where l is the last term (or newest term), a is the first term (-2), and d is the common difference (3).

Please substitute these values into the equation l = a + (n-1)d.

Compare your result to the four given possible answer choices.

Answer 5

@mathmale Would it be this?

a1 = -2+(n-1)3

Answer 6

I'd write it like this:\[a _{n} = -2+(n-1)3 \]... but otherwise your result is fine!