Use the product property of logarithms to write the logarithm as a sum of logarithms. Then simplify if possible. Assume that all variable expressions represent positive real numbers. log(3vw) = ?

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

not sure but it may be b, as i said i'm not sure.