Answer
a) $y= 1500*.8^x$
b) $768
c) 4.923 years
Work Step by Step
a) $y= 1500*.8^x$
b)$y= 1500*.8^x$
$y= 1500*.8^3$
$y = 1500 *.512$
$y = 768$
c)
$500 = 1500*.8^x$
$500/1500 = 1500*.8^x/1500$
$1/3 = .8^x$
$4.923 = x$
Algebra 1
by Hall, Prentice
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 - Page 451: 44
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