MHR • Advanced Functions 12 Solutions 660
MHR • Advanced Functions 12 Solutions 660
MHR • Advanced Functions 12 Solutions 660
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Chapter 7 Practice Test Question <strong>12</strong> Page 411<br />
a) Answers may vary. A sample solution is shown.<br />
Yes, a quadratic curve of best fit could be drawn through the points since the points are<br />
nearly the shape of a quadratic.<br />
b) Answers may vary. A sample solution is shown.<br />
Yes, an exponential curve of best fit could be drawn through the points since they follow the<br />
shape of an exponential equation.<br />
c) Answers may vary. A sample solution is shown.<br />
i) population of a bacteria culture over time<br />
ii) surface area affected by an oil spill over time<br />
Chapter 7 Practice Test Question 13 Page 411<br />
a)<br />
b)<br />
c)<br />
y &= 0.17x 2 – 5.34x + 97.93<br />
y &= 95.67(0.96) x<br />
d) Answers may vary. A sample solution is shown.<br />
The exponential model is better for predicting values for x > 15.74. The quadratic model<br />
gives increasing values, which is not realistic.<br />
<strong>MHR</strong> <strong>•</strong> <strong>Advanced</strong> <strong>Functions</strong> <strong>12</strong> <strong>Solutions</strong> 749
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