Question

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

Answer 1

Answer:

The quantity after t years 40 $(0.65)^{\textrm t}$ millions tons

Step-by-step explanation:

Given as :

The rate of decrease of carbon dioxide each other = 35%

The quantity of carbon dioxide emitted this year = 40 million tons

Let the quantity of carbon dioxide emitted after t year = A millions tons

Now, According to question

The quantity of carbon dioxide emitted after t year = The quantity of carbon dioxide emitted this year × $(1-\dfrac{\textrm rate}{100})^{\textrm time}$

Or, A millions tons = 40 millions tons × $(1-\dfrac{\textrm 35}{100})^{\textrm t}$

Or, A millions tons = 40 millions tons × $(\dfrac{100-35}{100})^{\textrm t}$

Or, A millions tons = 40 millions tons × $(\dfrac{65}{100})^{\textrm t}$

Or, A millions tons = 40 millions tons × $(0.65)^{\textrm t}$

So,The quantity after t years = A = 40  $(0.65)^{\textrm t}$ millions tons

Hence The quantity after t years 40 $(0.65)^{\textrm t}$ millions tons    Answer

Answer 2

Answer:

answer above is correct

Step-by-step explanation: