SOLUTION: The data in the table shows the price of apple at a local store over several years. Year 1 , 2, 3 , 4, Cost 0.45, 0.90 , 1.35, 1.80. a. Which model best des

Algebra ->  Functions -> SOLUTION: The data in the table shows the price of apple at a local store over several years. Year 1 , 2, 3 , 4, Cost 0.45, 0.90 , 1.35, 1.80. a. Which model best des      Log On


   

Question 876657: The data in the table shows the price of apple at a local store over several years.
Year 1 , 2, 3 , 4,
Cost 0.45, 0.90 , 1.35, 1.80.
a. Which model best describes the data for apples?
b. Write the function that models the data for apples.
c. Predict the cost of apples in year 8.
Show work please help me thanks.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi

x	y	(x-2.5)	 (y-1.125)Product(x-2.5)^2

1	0.45	-1.5	-0.675	1.0125	2.25

2	0.9	-0.5	-0.225	0.1125	0.25

3	1.35	0.5	0.225	0.1125	0.25

4	1.8	1.5	0.675	1.0125	2.25

10	4.5	0	0	2.25	5

2.5	1.125									

y = ax + b

 a = 2.25/5 = .45

 b = 1.125 - .45*2.5 = 0

y = .45x , when x = 9, y = $3.60

Or use Excel Scatter Plot capbilities

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