Question

Which rule can you use to find the nth term of an arithmetic sequence in which the common difference is 5 and a12 = 63?

Answer 1

A an=3+5
B an=3-5n
C an=13+5n
D an=-5n

im thinking its c but im not sure?

Answer 2

let a be the first term
tn=a+(n-1)d
when n=12,tn=63
63=a+(12-1)*5
a=63-55=8
tn or an=8+(n-1)5=8+5n-5=3+5n

Answer 3

so thatd be A?

Answer 4

yes

Answer 5

thank u so much!

Answer 6

you have written only 3+5
typing error.