Answer
(a) $y = -3\times10^{-07}x^2 + 0.0185x - 166.73$
(b) See graph.
(c) $107.07$(bushels/acre)
Work Step by Step
(a) Find the quadratic polynomial that best fits the data.
$y = -3\times10^{-07}x^2 + 0.0185x - 166.73$
(b) Draw a graph of the polynomial from part (a) together with a scatter plot of the data.
See graph.
(c) Use your result from part (b) to estimate the yield for 37,000 plants per acre.
When $x=37000$ we have $y=107.07$(bushels/acre)
