The closed formula for <span>an = an-1 – n will be found using the formula for arithmetic sequence given by:
an=a+d(n-1)
where
a=first term
d=common difference
n=number of terms
From the formula given:
a=4
d=n
thus the formula will be:
an=a+n(n-1)
an=4+n(n-1)
</span>
79 percent i believe hope this helps
Well if its exponential it must be x ^n
52 and 48 if you take away 2 from 50 then,add it to the other 50 52+48
