How would you go about simplifying 5,759 over 999?

What number should be added to the expression x^2+3x+ in order to create a perfect square trinomial? 3/2 3 9/4 9

Isabel graphed the following system of equations. 2x – y = 6 y = -3x + 4 she came up with the solution (2,-2). what were the 3 steps she did to get that solution? (make sure they are in the correct order)

Why is it so easy to buy on impulse and overspend with a credit card? what could you do to counteract this tendency?