Question

Check my answers please (finding nth terms)
Find an equation for the nth term of the arithmetic sequence.

a14 = -33, a15 = 9
Answer: an = -579 + 42(n + 1)

Find an equation for the nth term of the arithmetic sequence.

-15, -6, 3, 12, ...
Answer: an = -15 + 9(n - 1)

Answer 1

Both are right, assuming you meant (n-1) in the first equation.

Answer 2

yes what tomhue said. i was checking your first and thinking, what did bailey do wrong?? then i realized your signs were different.

Answer 3

Oh yeah right:D. If you don't mind checking a couple more:
Find an equation for the nth term of the sequence.

-3, -12, -48, -192, ...
Answer: an = -3 • 4^n - 1

Answer 4

Find the first six terms of the sequence.

a1 = -6, an = 4 • an-1

Answer: -6, -24, -96, -384, -1536, -6144

Answer 5

spot on!

Answer 6

Great thanks for helping me:) Just had to make sure I was doing everything right.

Answer 7

no problem! what class are you in?

Answer 8

Pre-Calc

Answer 9

you're going to do fine in calculus!