Question

1) Factor: k2 - 4

a. (k-2) (k-2)
b. (k2 + 4) (k2 - 4)
c. (k+2) (k-2)
d. (k+4)(k-4)
e. None of the above

2) Solve for x: (5x - 10)/(x - 2) = (3x)/(x + 1)

a. No Solution
b. -5/2
c. -1/2
d. 8
e. None of the above

3) Solve for x
x2 + 10x + 1 = 0

a.7
b.-5 ± v10
c.7 or -17
d.-5 ± 2v6

4) Solve for y:
x = (3 + y)2

A.-3 + v18 + x or -3 - v18 + x
B.-3 + vx or -3 - vx
C. -3 or 3
d. -3
e. None of the above

5) Find the real number restrictions on x in the expression

x2 / (x2 - 14x + 49)

A.0 and 7
b.7 and -7
c.7
d. none
e. None of the above

A company finds that its profits can be modelled with the formula P= 67.2x - 4.2x2, where P is the profit in millions of dollars and xis the production (in thousands of units). At what profit level isthe model valid? Hint: Look at the Axis of Symmetry andVertex

A.P = $268.8 million
B.P = $4,515.8 million
C.P = $504 million
D.P = $672 million
E.None of the above


7) Solve for x: x2 - 3x + 2 = 0


A.{-2, -1}
B.{1, 2}
C.{-1, 2}
D.{-2, 1}
E.None of the above



8) Solve for x: x + 3 = 4(3x - 1)

A.7/11
B.5/11
C.-1/11
D.4/11
E.None of the above

9) Simplify: (7ab) / (a2 - b2) - (a - b)/(a + b)

A.(-a2 + 5ab - b2 ) / (a + b)(a - b)
B.(a2 + 5ab - b2 ) / (a + b)(a - b)
C.(a2 + 9ab + b2 ) / (a + b)(a - b)
D.(-a2 + 9ab - b2 ) / (a + b)(a - b)
E. None of the above

10) Solve for x (3/x) + 9/(2x) = 1
A.15/2
B.4
C.1/4
D. No solution
e. None of the above