assuming that a is not equal to c, find the x-value of the intersection points of the lines y=ax+b and y=cx+d

Which is the graph of f(x) = 0.5(4)x? the population of a town grows exponentially. after 1 year, the population is 34,560. after 2 years, the population is 37,325. which equation can be used to predict, y, the number of people living in the town after x years? (round population values to the nearest whole number.)