Question 973959
<pre>
This is a geometric sequence.

{{{a[1]=1.5m=150cm}}}, {{{r=0.74}}}

The formula is

{{{a[n]=a[1]r^(n-1)}}}

Just substitute a<sub>1</sub> = 150cm and r = 0.74

{{{a[n]=150(0.74)^(n-1)}}}

That's the rule.

For the second part, substitute n = 6

{{{a[6]=(150)(0.74)^(6-1)=(150)(0.74)^5=150*0.2219006624=33.28509936}}}cm.

Edwin</pre>