Write the sum (6^4+6)+(6^5+6)+(6^6+6)+(6^7+6) in summation notation in terms of 𝑘. (Use symbolic notation and fractions where needed.)

Answer 1

3

∑(6^k+4+6)

k=0

where k=0 is written below the bottom horizontal bar of the summation symbol and 3 is written above the top horizontal bar. Note that this can be reindexed, so there are multiple ways of writing the same summation!