# Questions & Answers

Contents

- Solve the system of equations and show all work.
- A traveling wave along the x-axis is given by the following wave function.
- Show that the equation represents a sphere and find its center and radius.
- Find an expression for the function whose graph is the given curve. The expression of the curve is x^2 + (y – 4)^2 = 9.
- Prove that if m and n are integers and m x n is even, then m is even or n is even.