What is the value of the expression x-3y when x=6 and y=12

Solve each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]

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?

Tim open up a new saving account with a $50 deposit and plant to deposit $20 per week into the same account.write an expression to represent the total amount in his savings account.