A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing


  • 4 years ago

Two companies Company A and Company B offer the same starting salary of $20,000 per year. Company A gives a raise of $1000 each year.Company B gives a raise of 4% each year. a) Write rules a and b in the nth year at companies A and B respectively. b) For each company find the sum of wages earned during the first 20 years of employment c) using the graphing calculator to find after how many years the total amount earned a company B is greater that the total amount of earned at company A?

  • This Question is Closed
  1. anonymous
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Company A: arithmetic series: An = 20,000 + 1000(n-1) A_20 = 39,000 sum after 20 years: Sn = 20(20,000+39,000)/2 = 590,000 Company B: geometric series: An = 20,000(1.04)^(n-1) A_20 = 42,136.98 sum after 20 years: Sn = 20,000(2.1911 -1)/(1.04-1) = 595,561.57

  2. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...


  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.