PLZ HELP-WILL FAN
Neil has been running a tutoring business since 2005. He charges a monthly fee for weekly tutoring sessions and a phone help line. Each year, he has increased his fee by the same amount. The table shows what Neil charged each customer for two given years of his business:
Year Annual Tutoring Fee
2005 $1200
2008 $1350
A. What is the rate of change and initial value for Neil’s business? How do you know?
B. Write an equation in slope-intercept form to represent the fees that Neil charges each year.

- anonymous

- katieb

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- anonymous

- anonymous

A: is a change of 150 every 3 years
and I don't know B

- anonymous

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## More answers

- anonymous

- anonymous

\[1350-1200=150\]\[2008-2005=3\]\[\frac{ 150 }{ 3 } =50\]

- anonymous

- anonymous

@saseal it came up like this\[1350-1200=150\]\[2008-2005=3\]\[\frac{ 150 }{ 3 } =50\]

- anonymous

- anonymous

\[y=50x+1200\]assuming 2005 is year 0

- anonymous

but what do i write for part b

- anonymous

that one up there

- anonymous

yes

- anonymous

B. Write an equation in slope-intercept form to represent the fees that Neil charges each year.

- anonymous

I'm really confused what to write @saseal

- anonymous

since he started business in 2005 so year 0 is x=0

- anonymous

thats the equation is slope intercept form?

- anonymous

when year 0 his price is 1200 that is the y-intercept

- anonymous

yup

- anonymous

x=0?

- anonymous

x=0 then y=1200

- anonymous

try x=3 see if you get 1350

- anonymous

im confused

- anonymous

with?

- anonymous

how to get the equation

- anonymous

you learned y=mx+c ?

- anonymous

i did y=mx+b

- anonymous

thats the equation for slope right?

- anonymous

its the same thing

- anonymous

yea

- anonymous

ok

- anonymous

thats what they want you to do

- anonymous

so whats the final answer?

- anonymous

@saseal ^

- anonymous

is it y=50x+3? @saseal

- anonymous

y=50x+1200

- anonymous

can u help me with another? @saseal

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