Question

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

a14 = -33, a15 = 9

Answer 1

d=42 right

Answer 2

yes, thats correct

Answer 3

find a1 = first term now

use,
\(\Large a_n = a_1 +(n-1)d\)

plug in n = 15, a15 = 9 , d= 42

Answer 4

so 9=a1 + (15-1)42 solve
a1= -579
so the equation is an=-579 + (n-1)42 ^_^

Answer 5

yes! thats corect :)
if you want you can simplify that :)

Answer 6

thanks :)