The greatest common factor (GCF) of x^3, x^7, x^9 is ?
Please help

Step-by-step explanation:

Let the greatest common factor of such that and they are not all equal to zero, is the common divisor of and . Therefore, and

You can write

The greatest common factor of is given as

and

This happens because is upper bounded because if then

for all . Therefore, the set has the greatest elements.

Taking such that

You can note that and

Therefore, the greatest common factor is

Note:

from the figure we get,

the x axis shows   the months and,

the y-axis shows the number of satisfied customer.

each line or each cell in upward direction (y-axis) shows 500.

the appropriate scale for the y - axis is: -

a = 2000 customers

b = 4000 customers

c = 6000 customers

d = 8000 customers

e = 10000 customers

f = 12000 customers

g = 14000 customers