Identify the terms, coefficients, and constants in the expression 12x + 19 please help

31

Step-by-step explanation:

we do not know the value of x so we would suppose that x is just a 1 which you multiply by 12 it gives you 12 so add 12 to 19.

23

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