Which of the following is not equivalent to 1/25?

1. 5^(-3)x5

2. 5^(-1)x5^(-1)

3. 5^(3)x5^(-5)

4. 5^(-2)x5^(4)

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