Question

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.

Answer 1

xD that's what i'm doing..graphing slopes and yeah most likely..
can you post your diagram

Answer 2

@superdavesuper can you help me?

Answer 3

will you be able to be explained it in words?

Answer 4

Part A asks for rate of change and initial value - do u know wat they means?

Answer 5

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

Answer 6

Very good :) so 100 is the rate of change...what about the initial value?

Answer 7

i dont know

Answer 8

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

Answer 9

i dont under stand it can u give me the answer i have 2 minutes for my test left

Answer 10

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.

Answer 11

hint....not hind :(

Answer 12

??

Answer 13

initial value is the fee when the business was started....

Answer 14

i dont understand its a pretest

Answer 15

if its a pretest, then u should stop n go back to read the study material or the link i posted be4.

Answer 16

let me know once u have read n studied some, we will work on Part B then :) good luck!