How do you complete the sentence: 68 is the __th term of the arithmetic sequence -2, 3, 8,...?

Question

1937 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-10-11T03:11:52

We use the formula #t_n = a + (n - 1)d# to find the nth term of an arithmetic sequence.

#68 = -2 + (n - 1)5#

#68 = -2 + 5n - 5#

#68 = -7 + 5n#

#75 = 5n#

#n = 15#

Hopefully this helps!