Select steps that could be used to solve the equation 1 + 3x = -x + 4. :subtract 1, add x, divide by 4
:add x, subtract 4, divide by 4
:add x, subtract 1, divide by 4
:subtract 3x, subtract 4, divide by -4
:subtract 3x, subtract 4, divide by 4

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: (1,3) and (-2,0) i think.

(x+3)(x+7)

step-by-step explanation: