Carlos is planting a vegetable garden. he has 30 carrot seeds, 24 tomato seeds, and 36 lettuce seeds. each row will have the same number of seeds, but carrots, tomatoes, and lettuce will not appear in the same row. if he puts the greatest possible number of seeds in each row, how many rows will there be?

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

210/22 = 9.55

since he can't take part of a person to the game the answer is 9 people

hope this !