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(a)

Plot the points and obtain the regression equation using Excel-sheet.

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The regerssion equation is $\"\"$ .

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The regerssion equation is $\"\"$ .

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(b)

The regerssion equation is $\"\"$ .

Substitute $\"\"$ in above exponential equation.

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The value of exponential equation at $\"\"$ is $\"\"$ .

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(a) The regerssion equation is $\"\"$ .

(b) The value of regerssion equation at $\"\"$ is $\"\"$ .