#### Answer

$\approx 9.75$million dollar

#### Work Step by Step

$f(8) - f(4) = \int^{8}_{4} f'(t) dt = \int ^{8} _{4} \sqrt{t} dt = \frac{2}{3} (16\sqrt{2} - 8) \approx 9.75$million dollar

Published by
Cengage

ISBN 10:
1285740629

ISBN 13:
978-1-28574-062-1

$\approx 9.75$million dollar

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