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Students in a Lab Measured the Breaking Strength S (In xx

Question 76

Multiple Choice

Students in a lab measured the breaking strength S (in pounds) of wood 2 inches thick, xx inches high, and 12 inches long. The results are shown in the table below. Use the regression capabilities of a graphing utility to fit a quadratic model to the data. Round the numerical values in your answer to two decimal places, where applicable.
x4681012S2422551210,36216,30223,912\begin{array}{|c|c|c|c|c|c|}\hline x & 4 & 6 & 8 & 10 & 12 \\\hline S & 2422 & 5512 & 10,362 & 16,302 & 23,912 \\\hline\end{array}


A) S=170.89x2209.79x+324S = 170.89 x ^ { 2 } - 209.79 x + 324
B) S=180.89x2205.79x+324S = 180.89 x ^ { 2 } - 205.79 x + 324
C) S=190.89x2+201.79x+331S = 190.89 x ^ { 2 } + 201.79 x + 331
D) S=170.89x2209.79x+327S = 170.89 x ^ { 2 } - 209.79 x + 327
E) S=180.89x2+203.79x331S = 180.89 x ^ { 2 } + 203.79 x - 331

Correct Answer:

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