help me with this

Question

If a story problem is talking about the price of widgets since 2010 and it gives the equation p = .75x + 2.09, where x is the number of years since 2010, you know that ...

A.
the price in 2010 was .75 and it has decreased 2.09 each year

B.
the price in 2010 was 2.09 and it has increased .75 each year

C.
the price in 2010 was .75 and it has increased 2.09 each year

D.
the price in 2010 was 2.09 and it has decreased .75 each year

Answer 1

x is the number of years since 2010

 

in 2010,   x=0

in 2011,   x=1

in 2012,   x=2...

 

the price in 2010 is p when x=0

 

p=.75(0) +2.09

p=0 + 2.09

p=2.09

 

the price in 2011 is p when x=1

 

p=.75(1) + 2.09

p=.75 + 2.09    which means that is will be MORE than in was in 2010---there is an INCREASE of .75

Answer 2

B.
the price in 2010 was 2.09 and it has increased .75 each year