Sophia and Nolan already had 20 shells in their shell collection. Then they went to the beach to collect even more. Sophia found 8 limpet shells, 2 oyster shells, and 6 conch shells. Nolan
found 2 more shells than Sophia did. How many shells do the pair have all together?
shells

34

Step-by-step explanation:

hello from mrbilldoesmath!

answer:

a(n) - a(n-1) -3

discussion:

this ones a bit interesting. given a(n) = 5 - 3n consider this:

a(n-1) = 5 - 3(n-1)

          = (5 - 3n) + 3             => but a(n) = 5 - 3n, the first term

          = a(n)   + 3                 => subtract 3 from both sides

a(n-1) -3 = a(n)  

or

a(n) - a(n-1) -3

you,

mrb

answer: the answer is simply nothing.

step-by-step explanation: because there is no ending to this question

gimme brainliest > : 3