Help please, my friend is in 6th grade and he doesn’t understand :’)

Bidhya devi Bhandari is the president of nepal

9.If 3 cups of water is 13 then we can assume each cup is 4 so 10x4 is 40 so 40 in weight

(do the rest for the table)

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