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.
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@kollw
@jackmullen55 please
A. The rate of change is +100 because every year the amount increased by 100. I figured this out by subtracting 350 from 750 which left 400. I then divided it by the number of years. B. 750 = 100(4) + 350
thank you
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