<PRE><B>Question 1169386</B>
The power, P watts, supplied to a circuit by a 9-V battery is given by the  formula  p = -0.51^2 + 91, where I is the current in amperes. (Amperes is just the units for the current, just like a length is in cm)
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Use CAP I for current, and L for length.

a)Graph the function.
DL the FREE graph software at www.padowan.dk
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b)For what value of the current with the power be a maximum?


c) What is the maximum power?
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