What is the percent increase from 30 to 39

➷ Use this formula:

percentage increase/decrease = (difference/original) x 100

Substitute the values in:

percentage increase = (9/30) x 100

percentage increase = 30%

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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