Question

Given the functions f(n) = 25 and g(n) = 3(n − 1), combine them to create an arithmetic sequence, an, and solve for the 12th term.

Answer 1

an = 25 − 3(n − 1); a12 = −11
an = 25 − 3(n − 1); a12 = −8
an = 25 + 3(n − 1); a12 = 58
an = 25 + 3(n − 1); a12 = 61

Answer 2

wow
does "combine" mean "add"?

Answer 3

yes :)

Answer 4

tell your math teacher there is no such mathematical operation as "combine"

Answer 5

Lol, will do!!

Answer 6

although you can "combine like terms" for example

Answer 7

if it means "add' then stick a plus sign between them
that is all

Answer 8

Ok, so now have C and D left

Answer 9

then replace \(n\) by \(12\) and see what you get

Answer 10

58! So, is it C?