
Concept explainers
(a)
To draw: a
(a)

Answer to Problem 28AYU
Explanation of Solution
Given:
Calculation:
Draw a scatter diagram of the data treating speed as the independent variable and find the type of relation appears to exist between speed and miles per gallon
From the scatter plot of the data it is seen that there is quadratic relation exists between speed
and miles per gallon.
Conclusion:
Thus, the scatter diagram is drawn.
(b)
To find: the quadratic function of best fit
(b)

Answer to Problem 28AYU
The relation between speed and miles per gallon is given below;
Explanation of Solution
Calculation:
The linear model that describes the relation between speed and miles per gallon is given below;
Conclusion:
The relation between speed and miles per gallon is given below;
(c)
miles per gallon for the Camry that is travelling 63 miles per hours
(c)

Answer to Problem 28AYU
Hence, miles per gallon for the Camry that is travelling 63 miles per hours is
Explanation of Solution
Calculation:
To predict miles per gallon for the Camry that is travelling 63 miles per hours, substitute
Hence, miles per gallon for the Camry that is travelling 63 miles per hours is
Conclusion:
Hence, miles per gallon for the Camry that is travelling 63 miles per hours is
Chapter 3 Solutions
Precalculus
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