Find the percent increase. Round to the nearest percent.

From 13 friends to 19 friends

use this formula:

p(a\b) = p(a and b)/p(b).

take it from here.

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

the radius is 2 times the diameter.

step-by-step explanation: