Calculate the percentage increase or decrease in each of the following cases.

a) The profit of a company increases from 50,000 to
80,000.

b)The metro fare increases from AED 8 to AED 20

c)The price of book decreased from 30 to 27.

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

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5.25 ounces

step-by-step explanation:

divided 3/4 and 6