anonymous
  • anonymous
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.
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
anonymous
  • anonymous
A: is a change of 150 every 3 years and I don't know B
anonymous
  • anonymous

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anonymous
  • anonymous
anonymous
  • anonymous
\[1350-1200=150\]\[2008-2005=3\]\[\frac{ 150 }{ 3 } =50\]
anonymous
  • anonymous
anonymous
  • anonymous
@saseal it came up like this\[1350-1200=150\]\[2008-2005=3\]\[\frac{ 150 }{ 3 } =50\]
anonymous
  • anonymous
anonymous
  • anonymous
\[y=50x+1200\]assuming 2005 is year 0
anonymous
  • anonymous
but what do i write for part b
anonymous
  • anonymous
that one up there
anonymous
  • anonymous
yes
anonymous
  • anonymous
B. Write an equation in slope-intercept form to represent the fees that Neil charges each year.
anonymous
  • anonymous
I'm really confused what to write @saseal
anonymous
  • anonymous
since he started business in 2005 so year 0 is x=0
anonymous
  • anonymous
thats the equation is slope intercept form?
anonymous
  • anonymous
when year 0 his price is 1200 that is the y-intercept
anonymous
  • anonymous
yup
anonymous
  • anonymous
x=0?
anonymous
  • anonymous
x=0 then y=1200
anonymous
  • anonymous
try x=3 see if you get 1350
anonymous
  • anonymous
im confused
anonymous
  • anonymous
with?
anonymous
  • anonymous
how to get the equation
anonymous
  • anonymous
you learned y=mx+c ?
anonymous
  • anonymous
i did y=mx+b
anonymous
  • anonymous
thats the equation for slope right?
anonymous
  • anonymous
its the same thing
anonymous
  • anonymous
yea
anonymous
  • anonymous
ok
anonymous
  • anonymous
thats what they want you to do
anonymous
  • anonymous
so whats the final answer?
anonymous
  • anonymous
anonymous
  • anonymous
is it y=50x+3? @saseal
anonymous
  • anonymous
y=50x+1200
anonymous
  • anonymous
can u help me with another? @saseal

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