the data can be modeled by the following system of linear equations.
−5x+30y=160
x+4y=166
equation 1 is modeled for the percentage of never-married american adults, y, x years after 1970 and equation 2 is modeled for the percentage of married american adults, y, x years after 1970. use these models to complete parts a and b.
a. determine the year, rounded to the nearest year, when the percentage of never-married adults will be the same as the percentage of married adults. for that year, approximately what percentage of americans, rounded to the nearest percent, will belong to each group?