F(x) = 6x - 8 when x = 4

f(4)=16

Step-by-step explanation:

all we have to do is plug 4 for x

f(4)= 6(4)-8

that means 6*4 is 24

f(4)=24-8

f(4)=16

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

i really dont know

step-by-step explanation: