Problem 2. 6 pts

Complete the square and write the equation in standard form. Then give the center and radius of the circle.

x²+ y² + 18x - 8y = 72

Problem 3. 28 pts (3 pts each problem, except #2 with 4 pts)

Let f(x) = 4x²+ 2x + 7 and g(x) = 2x - 3

Find the following:

1. (g - f) (x)

2. (f/g) (x); find the domain

3. (f*g) (x)

4. f(x - 3)

5. (f og) (x)

6. (g of) (x)

7. g(f(-1))

8. f^-1(x)

9. f(-x)