Question

How do you evaluate the sum from n=3 to n=10 for `(n+2^n)`?

Answer 1

See explanation below

Explanation:

We have two squences `n` and `2^n`

First is arithmetic and second is geometric

For arithmetic `r_3^10=(10+3)/2·8=52`

For Geometric `s_3^10=8(2^8-1)/(2-1)=2040`

Then `S_3^10=52+2040=2092`