Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 7 - Exponents and Exponential Functions - Chapter Test - Page 479: 19

Answer

After $2\;yr$ $2217.71$ After $5\;yr$ $2589.52$

Work Step by Step

The given values are Initial value $=\$2000$. Rate of interest $r=5.2\%=0.052$. Number of periods $n=4$. Formula for compounded interest: $A=P(1+\frac{r}{n})^{nt}$ For time $t=2\;yr$. Substitute all values into the formula. $A=2000(1+\frac{0.052}{4})^{4\cdot 2}$ Simplify. $A=2217.71$ For time $t=5\;yr$. Substitute all values into the formula. $A=2000(1+\frac{0.052}{4})^{4\cdot 5}$ Simplify. $A=2589.52$
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