Question

is an=4n+16 equal to any of these other options are an=16+(n-1)(4)
an=16+4n
an=20+(n)(4)
an=20+(n-1)(4)

Answer 1

Notice how

an=20+(n-1)(4)

turns into

an=20+4n-4

Answer 2

what does that simplify to?

Answer 3

16+4n... but doesnt that mean it could be the first or last option @jim_thompson5910

Answer 4

You mean the second and last?

Answer 5

yes sorry @jim_thompson5910

Answer 6

You're right, the second and last options are the same. So perhaps you can choose more than one answer?

Answer 7

If you can, the answers are B and D

Answer 8

well it says which ecxplicit formla corresponds with the simple so wouldnt you say D? @jim_thompson5910

Answer 9

Yes, D is the basic form you start with

Answer 10

Then with a bit of simplifying, it turns to B

So if you can only choose one, I'd go with D