Add. (5y - 1) + (-2y + 4) a) 3y - 5 b) 3y + 3 c) 7y + 3 d) 7y - 3

How to do this , and can some one explain

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?

Find the equation of the ellipse with the following properties. the ellipse with foci at (0, 6) and (0, -6); y-intercepts (0, 8) and (0, -8).edit: the answer is x^2 over 28 + y^2 over 64 = 1