Help please! Medal/Fan
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.

Question

Help please! Medal/Fan
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.

anonymous · Answer

@callielovesyhuu

callielovesyhuu · Answer

a. the rate of change is 100 because it went up 100 each year. I know this because I subtracted 350 from 750 and got 400 and divided it by the number of remaining year.
b x+350=750