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qid 339 · business

Question: Quinones Bros, has been in business for four years. Management has estimated the gross annual earnings after t years to be \surd(10t^2 + t + 236) in thousands of dollars. What was the annual rate of growth of earnings after four years? As a percentage, what was the rate of growth of the earnings after four years?

  1. 5.00%
  2. 2.50%
  3. 3.20%
  4. 6.00%
  5. 2.20%
  6. 1.00%
  7. 3.50%
  8. 2.80%
  9. 1.50%
  10. 4.00%

Our answer: E. 2.20% Source quote machine-checked (at mint)

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How it was answered

Stored formula / worked method, replayed by code

Business calculus: annual and percentage rate of growth of an earnings function E(t) = sqrt(a t^2 + b t + c) after t years

card: formula · card sha256 1e261bf666a91bf5…

Current source

REA, The Business, Accounting & Finance Problem Solver (Research and Education Association, Piscataway NJ, 2000, ISBN 0878915168), PROBLEM 6-5, 'Quinones Bros. has been in business for four years'; archive.org full-text index, items businessaccounti0000unse and businessaccounti0000unse_l0m0 (lending-restricted; text reached through https://be-api.us.archive.org/fts/v1/search snippet highlights). The book's own words: '= 42.9 thousands, The annual percentage rate of growth is therefore .944/42.9 x 100% = 2.20%'. The same function sqrt(10t^2+t+236) at t=4 is worked honestly (81/(2*sqrt(400))) in...

Source weak (isbn)

retrieved 2026-09-16T22:14:06.748Z

addendum formula_qid339.formula_ADDENDUM_source · sha256 0f46418bd6f1ec95…

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