For question a., where does the "4.921" come from?

Q = P = 163.3984 - 0.2032 Q

0.2032 Q = 163.3984 - P

Q = (163.3984 - P) / 0.2032

Q = 163.3984/0.2032 - P/0.2032

Q = 804.126 - 4.921 P

What number is "P" to get to the 4.921.

163.3984/0.2032 = 804.126

But I don't know where to get 4.921 from? It says "P/0.2032" but I don't know what number "P" is. Can you please help me with this?

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Step-by-Step explanation

to determine the demand function as P = f(Q)

P = f(Q)

P = 163.3984 - 0.2032 Q

Confidence = adjusted R square = 0.9131 = 91.31% of confidence. Use algebra to invert the demand function to Q = f(P).

Q = P = 163.3984 - 0.2032 Q

0.2032 Q = 163.3984 - P

Q = (163.3984 - P) / 0.2032

Q = 163.3984/0.2032 - P/0.2032

Q = 804.126 - 4.921 P