Wednesday

August 5, 2015

August 5, 2015

Posted by **Mittens** on Wednesday, September 5, 2012 at 1:49pm.

When I couldn't find a symbol for the exponent I used the ^

1. 18r⁴ s⁵ t⁶ ÷ -3r² s t³ = ?

A. 6r²s⁵t³

B. -6r²s⁵t³

C. 6r²s⁴t³

D. -6r²s⁴t³

2. One day when Terry went to school the temperature outside was −15 degrees Fahrenheit. In Terry’s classroom the temperature was 68 degrees Fahrenheit. How many more degrees was it inside the building than outside?

A. +53 degrees

B. −53 degrees

C. +83 degrees

D. −83 degrees

3. Simplify (2x + 3)(x − 4) = ?

A. 2x² + 5x − 12

B. 2x² − 5x − 12

C. 2x² − 5x + 12

D. 2x² + 5x + 12

4. 7 x (−3) x(−2)² = ?

A. 48

B. −48

C. 84

D. −84

5. Simplify (3a⁴ − 2a² + 5a − 10) − (2a⁴ + 4a² + 5a − 2).

A. 5a⁴ + 4a³ + 3a² + 10a − 12

B. a⁴ − 4a³ − 2a² − 8

C. a⁴ − 6a² − 8

D. a⁴ + 2a² + 10a − 12

6. If Janice purchased three 24-ounce cans of motor oil for $10.80, how much did she pay per ounce?

A. $.45

B. $.15

C. $2.59

D. $3.60

7. (5 + 4 − 2) x( −2) = ?

A. 22

B. −22

C. 14

D. −14

8. Simplify (2e − 2f )(2f + 8) = ?

A. 4ef − 4f²

B. 4ef + 16e + 4f² + 16f

C. 4ef + 16e − 4f² − 16f

D. 4ef − 16e − 4f² − 16f

9. The expression 12xyz − 45 is a

A. monomial.

B. binomial.

C. trinomial.

D. constant.

10. What is the result if you divide −12x^8y^8 by 3x⁴y²?

A. −4x² y⁴

B. 4x 2y⁴

C. −4x⁴y⁶

D. 4x⁴y⁶

11. Simplify (x² + 16)(x² − 16) = ?

A. x⁴ − 32

B. x⁴ + 32

C. x⁴ − 256

D. x⁴ + 256

12. Simplify (15x² − 24x + 9)divided by (3x − 3) = ?

A. 5x + 3

B. 5x − 3

C. 5x + 13 with a −30 remainder

D. 5x − 13 with a −30 remainder

13. If the value of b is 7, then what is the value of the expression −3b² + 25 = ?

A. 172

B. 122

C. −122

D. 17

14. Simplify (−8q³r⁴s²)² = ?

A. 64q^9r^16s⁴

B. −64q^9r^16s⁴

C. −64q^6r^8s⁴

D. 64q^6r^8s⁴

15. Simplify 12 − (−8) x 4 = ?

A. 16

B. 44

C. −20

D. 80

16. Simplify 2a²b³(4a² + 3ab² − ab)= ?

A. 8a⁴ b⁵ + 3a³ b⁵ − 2a³ b⁴

B. 8a⁴ b³ + 6a³ b⁵ − 2a³ b⁴

C. 8a⁴ b³ + 6a³ b⁵ + 2a³ b⁴

D. 8a⁴ b⁵ + 3a³ b⁵ + 2a³ b⁴

17. Simplify (3n − 2m)² = ?

A. 6n² − 12mn − 4m²

B. 9n² − 12mn − 4m²

C. 9n² + 12mn + 4m²

D. 9n² − 12mn + 4m²

18. Simplify (3 x 22) divided by 6 + [28 − (4)²] = ?

A. 32

B. 46

C. 23

D. 55

19. What is the result of dividing 48a³ + 32a² + 16a by 4a ?

A. 12a + 8

B. 12a² + 4a + 4

C. 12a² + 4a + 8

D. 12a² + 8a + 4

20. You can calculate the interest on a savings account by using this formula:

Interest = Principal Rate Time

If Mary deposits $275 in principal at an interest rate of 3.2 percent, how much interest will she earn

in one year?

A. $8.80

B. $88

C. $880

D. $18.80

My answers:

1. D

2. C

3. B

4. D

5. C

6. B

7. D

8. D

9. B

10. A or C

11. C

12. B

13. C

14. B

15. B

16. B

17. D

18. C

19. D

20. A

- algebra -
**Steve**, Wednesday, September 5, 2012 at 3:34pmDon't know where you copied the problems from, but the font got garbled for many of the problems. Anyway, trying to work past the font munging,

* means wrong

1. garbled, but probably B or D

2. C if outside is -15F

3. B if it was (2x + 3)(x - 4)

4. garbled, but since 7 divides 84, probably C or D

5. garbled, but probably C - the coefficients seem good

6. B

7. D if it was (5+4-2)(-2)

*8. C if it was (2e-2f)(2f+8)

9. B

10. A or C, but too garbled

11. C if (x^2+16)(x^2-16) = x^4-256

12. B

13. C

*14. D garbled, but if the whole parenthesized expression is squared, then the coefficient must be 64, not -64. Also, (A) has q^9, which cannot be a square.

15. B

16. B

17. D

18. C

19. D

20. A

most look good; better double-check #8,14. If I interpreted them correctly, yo missed them.

- algebra -
**Anonymous**, Wednesday, September 5, 2012 at 6:20pmSorry. It looked normal when I first posted it. I don't know what happened. Thank you for the answer, though!

- algebra -
**Mittens**, Thursday, September 6, 2012 at 12:13pm1. Was D

4. Was D

10. Was C

You were correct and I passed :) Thank you.