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The first term is 3/8 by using the geometric seq. formula. An=A1r^n-1
<br />solution:<br />3=3/4r^4-2 then divide both sides by 3/4 <br />3•4/3=r^2<br />4=r^2 then square root of 4 is two so the r=2.<br />then divide the second term by 2 to get the first term so the first term is 3/8.