A meal delivery business makes and sells dinner packages. The cost $C to make N diner packages is modelled by the equation

C = 1200 + 5N.

Technology was used to draw the straight-line graph to represent the cost of making each dinner package.

The x-axis displays the number of packages and the y-axis displays the cost/revenue in dollars.It is known that the company breaks even at 400 dinner packages. Using the graph, form an equation for revenue to determine how many dinner packages need to be sold to make a profit of $1500