<PRE><B>Question 1202587</B>
&lt;br&gt;
{{{(16a^3)(b^(-4))=2a}}}&lt;br&gt;
On both sides, multiply by b^4 and divide by 2a to separate the a&#39;s and b&#39;s.&lt;br&gt;
{{{8a^2=b^4}}}&lt;br&gt;
We want the value of a^-2; so take the reciprocal of both sides of the equation.&lt;br&gt;
{{{(1/(8a^2))=(1/b^4)}}}&lt;br&gt;
Multiply by 8 to get the desired expression on the left.&lt;br&gt;
{{{(1/a^2)=8/b^4}}}&lt;br&gt;
ANSWER: (C) {{{8/b^4}}}&lt;br&gt;

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