The earning per share for a retail store were $1.87 in 2008 and $2.51 in 2010. Use the midpoint formula to estimate the earnings per share in 2009. Assume the earning per share followed a linear pattern.
Midpoint formula = ((x1+x2)/2), ((y1+y2)/2)
((2008+2010)/2), ((1.87+2.51)/2)
(2009, $2.19)
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