Question

PLEASE HELP!!!!

Use sigma notation to represent the sum of the first five terms of the following sequence: −5, −9, −13, …

the summation from n equals one to 5 of quantity negative 5 plus 4 times n
the summation from n equals one to 5 of quantity negative 1 minus 4 times n
the summation from n equals one to 5 of quantity negative 1 minus 5 times n
the summation from n equals one to 5 of quantity negative 1 plus 4 times n

Answer 1

`\displaystyle \sum_(n=1)^(5) (-5 -4(n-1))`

`\displaystyle =\sum_(n=1)^(5) (-1-4n)`

Answer: the summation from n equals one to 5 of quantity negative 1 minus 4 times n