Answer
$-16.5$,-15,75,-14.625,-12.9375$,-10.4063$
Work Step by Step
$f(n)=1.5^n-18$
$f(1)=1.5^1-18=-16.5$
$f(2)=1.5^2-18=-15,75$
$f(3)=1.5^3-18=-14.625$
$f(4)=1.5^4-18=-12.9375$
$f(5)=1.5^5-18=-10.4063$
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