The build a dream construction company has plans for two models of the homes they build, model a and model b. the model a home requires 18 single windows and 3 double windows. the model b home requires 20 single windows and 5 double windows. a total of 1,800 single windows and 375 double windows have been ordered for the developments. write and solve a system of equations to represent this situation. define your variables. interpet the solution of the linear system in terms of the problem situation