Victoriasushchik
  • Victoriasushchik
Sarah has been running a dog-walking business since 2010. She walks dogs twice a day, takes them to the park, and returns them to their homes. Each year, she has increased her fee by the same amount. The table shows what Sarah charged each customer for two given years of her business: Year Annual Dog-walking Fee 2010 - $350 2014 - $750 A. What is the rate of change and initial value for Sarah's business? How do you know? B. Write an equation in slope-intercept form to represent the fees that Sarah charges each year.
Mathematics
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SOLVED
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schrodinger
  • schrodinger
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AloneS
  • AloneS
xD that's what i'm doing..graphing slopes and yeah most likely.. can you post your diagram
Victoriasushchik
  • Victoriasushchik
@superdavesuper can you help me?
Victoriasushchik
  • Victoriasushchik
will you be able to be explained it in words?

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superdavesuper
  • superdavesuper
Part A asks for rate of change and initial value - do u know wat they means?
Victoriasushchik
  • Victoriasushchik
i already did part A. I got: The rate of change is 100 because it went up each year. I know this because i subtracted 350 from 750 and i got 400 and divided it by the number of remaining year. bx + 350 = 750
superdavesuper
  • superdavesuper
Very good :) so 100 is the rate of change...what about the initial value?
Victoriasushchik
  • Victoriasushchik
i dont know
superdavesuper
  • superdavesuper
can u read about the initial value on P.2 here plz? http://www.charleston.k12.il.us/cms/Teachers/math/Algebra/aunit1/L1-3.PDF
Victoriasushchik
  • Victoriasushchik
i dont under stand it can u give me the answer i have 2 minutes for my test left
superdavesuper
  • superdavesuper
Not supposed to give out ans for test....sorry @Victoriasushchik OK - can u take a guess at what the initial value is? I will give u a hind it is for the year the business was started.
superdavesuper
  • superdavesuper
hint....not hind :(
Victoriasushchik
  • Victoriasushchik
??
superdavesuper
  • superdavesuper
initial value is the fee when the business was started....
Victoriasushchik
  • Victoriasushchik
i dont understand its a pretest
superdavesuper
  • superdavesuper
if its a pretest, then u should stop n go back to read the study material or the link i posted be4.
superdavesuper
  • superdavesuper
let me know once u have read n studied some, we will work on Part B then :) good luck!

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