Find the remainder when dividing 2^2013 by 15.
*answer should be in modulo. example: find the remainder when dividing 2^100 by 21 and the answer is 2^100 = 16mod(21).*

8121 because

130,000 divided by 16 is 8121

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