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:

Question

kpop4life123 · Answer

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. (10 points)

katherinkoon · Answer

this is a long one

kpop4life123 · Answer

sorry

kpop4life123 · Answer

but i really need help fast

aihberkhan · Answer

Okay.

Okay for a: 

The rate of change is $100$. This is because you have to subtract $350$ from $750$ and then you get $400$. Then finally, you have to divide it by the number of remaining years.

So she raises the price $100$ dollars a year. 

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aihberkhan · Answer

Now for b. 

All you have to realize is that with the years it starts from $350$ and goes up to $750$, which is a slope. 

So, your equation in slope-intercept form should be $x + 350 = 750$

aihberkhan · Answer

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kpop4life123 · Answer

OK AND THANK YOU SO MUCH!!!!!!!!!!!!!!!!!!! :D @AihberKhan

aihberkhan · Answer

No problem! :)

Anytime!! :)

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