Warren is going to send some flowers to his wife. Weston Florist charges $2 per rose, plus $40 for the vase. Harper's Flowers, in contrast, charges $3 per rose and $30 for the vase. If Warren orders the bouquet with a certain number of roses, the cost will be the same with either flower shop. How many roses would there be? Write a system of equations, graph them, and type the solution. ​