SOLUTION: Alex puts his spare change in jar every night. If he has $11.09 at the end of January, $22.27 at the end of February, $44.35 in April, $75.82 in July, $89.00 in August, and $114.76

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Alex puts his spare change in jar every night. If he has $11.09 at the end of January, $22.27 at the end of February, $44.35 in April, $75.82 in July, $89.00 in August, and $114.76      Log On


   

Question 986109: Alex puts his spare change in jar every night. If he has $11.09 at the end of January, $22.27 at the end of February, $44.35 in April, $75.82 in July, $89.00 in August, and $114.76 at the end of October, perform a linear regression on this data.
Alex wants to buy a video game console at the end of December for $140.00.
Will he have enough for this purchase? ( Show your work that supports your conclusion.)
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Alex puts his spare change in jar every night.
-------------------------------
If he has $11.09 at the end of January, $22.27 at the end of February, $44.35 in April, $75.82 in July, $89.00 in August, and $114.76 at the end of October, Perform a linear regression on this data.
----
Pairs:: (1,11.09),(2,22.27),(4,44.35),(7,75.92),(8,89.00)
y = 10.99x + 0.1617
============================

Alex wants to buy a video game console at the end of December for $140.00.
Will he have enough for this purchase?
f(10) = 10.99*10 + 0.1617 = $109.91
Ans: No
-------------
Cheers,
Stan H.
-------------