The country of freedonia has decided to reduce it's carbon dioxide emission by 35%each year. This year the country emitted 40million tons of carbon dioxide. Write a function that gives Freedonias carbon dioxide emissions in million tons, E(t),t years from today

E(t)=40(0.65)^t

Step-by-step explanation:

100%-35%=65%

so each year it gets multiples by 65% orr 0.65

the direct variation says that:

then the equation is of the form is given by:

            where k is the constant variation.

from the given table:

consider any value of x and m(x)=y

x = 2 and m(x)=y = 3

substitute these value in [1]; we have;

divide both sides by 2 we get;

⇒

check:

put x = -1 and m(x) = -1.5

substitute in the equation:

-1.5 = -1.5                   true

therefore, the function m(x) represents a direct variation

graph of this function as shown below:

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