What is the surface area of this square pyramid

Which is the completely factored from of xy^3-x^3y

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.

What will the graph look like for a system of equations that has no solution? a. the lines will be perpendicular. b. the lines will cross at one point. c. both equations will form the same line. d. the lines will be parallel.