Resuelve esto con el metodo de sustitucion
x-2y=4

3x+y=9

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

Find the cosine function that is represented in the graph.

Campus rentals rents 2 and 3 bedrooms apartments for $700 ans $900 a month respectively. last month they had six vacant apartments and reported $4600 in lost rent. how many of each type of apartment were vacant?