Answer
$320$ $dollars$
Work Step by Step
This requires $800 W * h$ of energy, which is $800/2 = 400$ batteries.$ 400 * 0.80$ =$320$ $dollars$.
Fundamentals of Physics Extended (10th Edition)
by Halliday, David; Resnick, Robert; Walker, Jearl
Published by
Wiley
ISBN 10:
1-11823-072-8
ISBN 13:
978-1-11823-072-5
Chapter 27 - Circuits - Problems - Page 795: 6a
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