Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 7 - Exponents and Exponential Functions - 7-6 Exponential Functions - Practice and Problem-Solving Exercises: 19

Answer

There will be $4800$ foxes after $45$ years.

Work Step by Step

There are 3 15 year periods in 45 years, so $x = 3$. According to the order of operations, we simplify inside parentheses, then we simplify powers, then we multiply and divide, and finally, we add and subtract. When we do this, we find: $y=75 \cdot 4^3 = 75 \cdot 64 = 4800$
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