26) Solve the given linear equation.

4x + 9 = 13

27)Find the slope of the line through P and Q.

P(1, 4), Q(0, 0)

28)Solve the equation. (Enter your answers as a comma-separated list. If there is no solution, enter NO SOLUTION.)

4|x| + 4 = 12

29)Factor the expression completely.

x³ + 10x² + 25x

32)Find all real solutions of the equation by completing the square. (Enter your answers as a comma-separated list.)

x² + 4x 2 = 0

34) Find the real and imaginary parts of the complex number.

4 + 9i

2

real part ?
imaginary part ?

36)Factor the perfect square.

x² + 16x + 64

38) Solve the nonlinear inequality. Express the solution using interval notation.

3x² 4x < 2x² + 32

39)A plumber and his assistant work together to replace the pipes in an old house. The plumber charges $35 an hour for his own labor and $15 an hour for his assistant's labor. The plumber works twice as long as his assistant on this job, and the labor charge on the final bill is $3400. How long did the plumber and his assistant work on this job?

plumber	h
assistant	h

41) Find the slope of the line through P and Q.

P(8, 2), Q(6, 2)

45)Solve the linear inequality. Express the solution using interval notation.

3x 1 > 8

46) Solve the equation. (Enter your answers as a comma-separated list. If there is no solution, enter NO SOLUTION.)

7 |3x + 9| = 1

47)actor the difference of squares.

x² 49