What is true when a system of equations has no solutions?
a. The lines coincide (are the same line).
b. The lines are parallel and do not intersect.
c. The lines intersect in one place.
d. This is impossible.

In 2009, there were 1570 bears in a wildlife refuge. in 2010, the population had increased to approximately 1884 bears. if this trend continues and the bear population is increasing exponentially, how many bears will there be in 2018?