treat the data as two ordered pairs, and find the linear equation
(38, 2200) and (49,2125)
slope = (2125-2200)/(49-38) = -75/11
so s - 2200 = (-75/11)(p-38)
11s - 24200 = -75p + 2850
11s + 75p = 27050
when s = 2143,
11(2143) + 75p = 27050
75p = 3477
p = $46.36
when s = 0
0 + 75p = 27050
p = $360.67
t has been discovered in a certain state that the relationship between the number of snow shovels demanded varies linearly with its price.
When the price per item was $ 38 ,2200 items were demanded;
When the price was $ 49 , 2125 items were demanded.
Determine the price per item when 2143 snow shovels are demanded. $
Above what price will the demand be zero ? $
2 answers
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