I added 6 to a certain number and then divide the result by 3. Find the number if my final answer is 5.( show working)

table 1

step-by-step explanation:

1-16

2-32

4-64

8-128

all multiples of 16

the answer is 489

step-by-step explanation:

(f - g)(x) = 5x^3 - 3

step-by-step explanation:

rearrange these functions vertically, with like terms in separate columns:

f(x) = 5x^3 - 2

g(x) =         +1

now subtract, column by column:

(f - g)(x) = 5x^3 - 3