Math

Write an expression for the most apparent nth term of the sequence. Assume n begins with 1.

3,7,11,15,19

My answer was an= 3 +4n but this wrong.

  1. 👍 0
  2. 👎 0
  3. 👁 126
  1. term(n) = a + (n-1)d
    = 3 + 4(n-1)
    = 3 + 4n - 4
    = 4n - 1

    check:
    term(3) = 12-1 = 11, checks!

    1. 👍 0
    2. 👎 0
    posted by Reiny
  2. Thank You

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Calculus 2 - Series

    I am so confused on how to do series problems...especially these. How can you tell the pattern and determining the formula for them? Can someone please help? 26) Write the first five terms of the sequence {an} whose nth term is

    asked by Helen on March 29, 2015
  2. math

    Write the first five terms of the sequence defined recursively. Use the pattern to write the nth term of the sequence as a function of n. (Assume that n begins with 1.) a (subtext) 1 =4,a (subtext) (k+1) =−a (subtext) k a. a

    asked by leah on August 27, 2016
  3. Urgent math

    how do I do this can any body show me how? An arithmetic sequence begins 4, 9, 14, 19, 24, . . . . (a) Find the common difference d for this sequence. d = (b) Find a formula for the nth term an of the sequence. an = (c) Find the

    asked by Aileen on August 15, 2015
  4. math

    24. Four friends attempted to write the explicit expression for the nth term of the sequence 2, 5, 10, 17, …. 24. Four friends attempted to write the explicit expression for the nth term of the sequence 2, 5, 10, 17, …. If n

    asked by emily on December 21, 2016
  5. Sj

    Mathematics......Under number patterns-Geometric series If a question goes.determine the expression for the nth term of the following sequence if the a) 4th term is 24 and the 7th term is 192 in a geometric sequence.what formula

    asked by Mahlogonolo on July 16, 2015
  6. algebra2/trig

    Write the next term of sequence,and then write the rule for the nth term. 1)1,8,27,64,....125 the nth is n 2) 3,8,15, 24,.....35 the nth is Can you help me and correct ? thank you

    asked by JOSEPH on April 28, 2012
  7. algebra 2/trig

    Write the next term of sequence,and then write the rule for the nth term. 1)1,8,27,64,....125 the nth is 2) 3,8,15, 24,.....35 the nth is Can you help me and correct ? thank

    asked by JOSEPH on April 28, 2012
  8. math

    help me with sequences problem.So if the sequence is 2,5,10,17,26 +3 +5 +7 +9 1st difference +2 +2 +2 2nd difference then the nth term can be worked out by writing out : n 1 2 3 4 n squared 1 4 9 16 original sequence 2 5 10 17 nth

    asked by Anonymous on May 9, 2009
  9. arithmetic

    Write and solve an expression to find the nth term of each arithmetic sequence... 3,7,11,15 n=8

    asked by Olyvea on May 17, 2011
  10. Math

    Hi! I need help with this question. Thank you! Directions: Write the expression for the nth term of the following geometric sequence. 5, 10, 20, 40, ...

    asked by Gloria on April 20, 2015

More Similar Questions