We were given a graph that represent the price in function of the number of flowers, we were also given a point on the graph, and from that, the question asks us to calculate the unit rate.
The unit rate is a constant that describes the relationship between two variables, and how they vary. For our case, the unit rate will describe the price per flower. To solve this problem, we need to divide 3 by 5.
The unit rate is equal to 0.6 $/flower.