Question

need to know if my answers is right on a summation problem...

Answer 1

\[\sum_{k=5}^{9}(3k-2)\] my answer is 117

Answer 2

i got 95...

Answer 3

how did you get 95?

Answer 4

starting at k = 5, sub it into the equation 3k-2

so for k = 5, it equals 3(5)-2 = 13
continue on until you get to k = 9...

then add up all the answers...

k = 5, you get 13
k = 6, what do you get?

Answer 5

for k = 6 you have 3(6)-2 = ?

Answer 6

you get 16... and thanks i must have done something wrong because when i do what you did i got 95....

Answer 7

Kudos to you for asking if you had the right answer, vs. asking for the answer outright.

Answer 8

great!

Answer 9

thanks jamesj