oil question -word problem

Question

the amount od oil imported to country a from country b in millions of barrels per day can be approximated by the equation y=0.062x+1.42, where x is the number of years since 2000. solve the equation for x. use the new equation to determine in which year the approximate number of oil barrels imported from country b per day will be 5.14 million

Answer 1

y = 0.062x + 1.42

 

Subtract 1.42 from both sides:

 

y - 1.42 = 0.062x

 

Divide both sides by 0.062

 

(y - 1.42)/(0.062) = x

 

To determine in which year the approximate number of oil barrels imported from country b per day will be 5.14 million, plug 5.14 into the above equation and compute the value of x.  Since x is the years since year 2000, the year will be 2000 + x.