Question

find the sum

Answer 1

it means this :
( 3(1) + 5 ) + ( 3(2) + 5 ) + ( 3(3) + 5 ) .... ( 3(6) + 5 )
hope this helps

Answer 2

that's 23 right?

Answer 3

only the last term is 26
you have to evaluate the sum of 1st term till last term

Answer 4

like first term = 3(1) + 5 = 8
2nd term = 3(2) + 5 = 11
.
.
last term = 3(6) + 5 = 23

now add them all

Answer 5

ok thanks!

Answer 6

glad to help :)