Module 4 Quiz

just need the answers

1.Factor completely. 9×2 + 30xy + 25y2

a. (3x + 5y)2

b. (3x – 5y)(3x + 5y)

c. (9x + 5y)(x + 5y)

d. (3x + y)(3x + 25y)

2. During rush hour, Fernando can drive 25 miles using the side roads in the same time that it takes to travel 20 miles on the freeway. If
Fernando’s rate on the side roads is 9 mi/h faster than his rate on the freeway, find his rate on the side roads.

a. 36

b. 38

c. 45

d. 47

3. Factor the trinomial completely.. 6b4 – 18b3 – 60b2

a. 6b2(b + 2)(b – 5)

b. 6b2(b – 2)(b + 5)

c. 6(b2 + 2)(b2 – 5)

d. b2(2b + 5)(3b + 10)

4.
Solve for x.

a. –2

b. 2

c. –4

d. No solution

5. The directions on a concentrated cleaner state that 3 tablespoons of concentrate make 345 ounces of cleaning fluid. How many ounces of
cleaning fluid will 2 tablespoons of cleaner make?

a. 190

b. 210

c. 230

d. 250

6. The profit on a watch is given by P = x2 – 13x – 80, where x is the number of watches sold per day. How many watches were sold on a day when
there was a $50 loss?

a. 13

b. 14

c. 15

d. 16

7. The area of a rectangle of length t is given by 12t – t2. Find the width of the rectangle in terms of t.

a. 12 – t

b. 12t

c. t – 12

d. t2

8.
Write in simplest form.

a.

b.

c.

d.

9. State which method should be applied as the first step for factoring the polynomial. (x + 9y)2 – 1

a. Find the GCF.

b. Group the terms.

c. Factor the difference of squares.

d. Use the ac method (or trial and error).

10.
Write the expression in simplest form.

a.

b. –

c. –

d.

11. Factor 3×3-x-4

a. (3x-4)(x+1)

b. (3x+4)(x+1)

c. (3x-4)(x-1)

d. (3x+4)(x 1)

12. Determine whether the following trinomial is a perfect square. If it is, factor the binomial. x2 + 9x + 9

a. Yes; (x + 3)2

b. Yes; (x – 3)2

c. Yes; (x + 9)2

d. No

13. What values for x, if any, must be excluded in the following algebraic fraction?

a.

b.

c.

d.

14. The volume V of a hollow cylinder is given by the formula V = L(R22 – R12). Factor the right-hand side of this equation.

a. L(R2 + R1)
2

b. L(R2 – R1)
2

c. L(R2 + R1)(R2 – R1)

d. LR2(R2 – R1)

15. Solve the quadratic equation. x2 = –6x

a. 0, –6

b. 0, 6

c. 6, –6

d. 2, 6

16.
Add. Express your result in simplest form.

a.
b.
c.
d.

17.
Multiply.

a.
b.

c. –n2 + n

d. 3

18.
Add or subtract as indicated.

a.
b.
c.
d.

19. One number is 8 more than another. Let x represent the larger number and use a rational expression to represent the sum of the reciprocals of
the two numbers.

a. 1

b.
c.
d.

20.
Write in simplest form.

a.
b.

c. 4a4b

d.

21.
Multiply.

a.
b.
c.
d.

22.

Simplify.

a.

b.
c.
d.

23. Factor completely. 15×2 – 16x + 4

a. (3x – 2)(5x – 2)

b. (3x + 2)(5x + 2)

c. (15x – 2)(x – 2)

d. (3x + 1)(5x + 4)

24. Perform the indicated operations.

a.
b.
c.
d.

25. Find the area of the rectangle shown.

a.

b.
c.
d.

26. Factor completely. 16×2 + 9

a. (4x + 3)(4x – 3)

b. (4x – 3)2

c. (4x + 3)2

d. Not factorable

27. State whether the following is true or false. x2 + 3x – 10 = (x + 5)(x – 2)

a. True

b. False

28. Factor. x2(y – z) – 25y2(y – z)

a. (x + 5y)(x – 5y)(y – z)

b. (x + 5y)2(y – z)

c. (x – 5y)2(y – z)

d. (x – 5y)(y – z)2

29.
What values for x, if any, must be excluded in the following algebraic fraction?

a. 0

b. –6

c. 6

d. None

30. Factor completely by factoring out any common factors and then factoring by grouping.

y4 + 3y3 – 5y2 – 15y

a. (y3 – 3y)(y + 5)

b. y(y2 – 3)(y + 5)

c. y(y2 – 5)(y + 3)

d. (y3 – 5y)(y + 3)

Finish