Answer:
The year is
Step-by-step explanation:
From the question we are told that
The percentage of the number of babies born out of wedlock in 1990 is k = 28%
The percentage by which the number increase per year is i = 0.6%
The percentage of of the number of babies born out of wedlock considered is a = 31%
Generally the difference in between the percentage in 1990 and the percentage considered is

=> 
=> 
Generally the number of year require for the percentage to be equal to 31% is mathematically represented as

=> 
Generally the year which the considered percentage will be attained is

=>
=>
<h2>Given :</h2>
<h2>Solution : </h2>

Through the statement above we have,
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The answer I'm pretty sure is B but I can't really explain it, sorry
3x+2 (5x-1)=11
3x +10x -2=11
3x+10x=13
13x=13
X=1