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It is a rational number because it can be expressed as a fraction in the form of 7/11 explanation:
<span> 7 because it causes the denominator to be 0.
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Hope This Helps You
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The Formula Used Above Is Only Used For Making Infinite Solutions. For Unique and No Solutions, There Is Other Formula!
A(n)=ar^(n-1) so
100=4r^9
25=r^9
ln25=9lnr
ln25/9=lnr
r=e^(ln25/9)
a(n)=4e^((n-1)(ln25/9) if you wanted an approximation...
a(n)=4(1.43^(n-1))