Explain the error in the simplification below: x 3 yx -4 z -2 =x -1 yz -2

Should have moved the negative exponents to the bottom of a fraction.

Should have multiplied the x exponents.

Should have subtracted the x exponents.

3 years ago you had $120 in the bank. You now have $207.36. If the amount of money at the end of each year increases exponentially, then how much will you have in the bank after another 7 years?

None of the answers are correct because the growth rate is 25% not 20%

Exponents Review

Quiz

•

Mathematics

•

10th Grade - University

•

Practice Problem

•

Hard

•

CCSS

8.EE.A.1, HSA.APR.A.1, HSN.RN.A.2

+1

Standards-aligned

Barbara White

FREE Resource

21 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

1.) Simplify
(2a²b⁴z)(6a³b²z⁵)

8a⁵b⁶z⁶

12a⁶b⁸z⁵

12a⁵b⁶z⁶

8a⁶b⁸z⁵

Tags

CCSS.HSA.APR.A.1

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

2.) Simplify
(3x³y⁵)⁴

3x¹²y²⁰

81x¹²y²⁰

12x¹²y²⁰

81x⁷y⁹

Tags

CCSS.8.EE.A.1

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

3.) Simplify
(45x⁶y²)/(5x⁴y⁹)

(9x²)/y⁷

40x²y⁷

9x²y⁷

9x¹⁰y¹¹

Tags

CCSS.HSA.APR.A.1

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

4.) Simplify
(16x⁴y^-5)/(8a³b^-8)

(a³y⁵)/(2x⁴b⁸)

(2x⁴b⁸)/(a³y⁵)

(8x⁴b⁸)/(a³y⁵)

2x⁴b⁸a³y⁵

Tags

CCSS.8.EE.A.1

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

5.) Simplify
(w^3/4z^8/7)(w^3/4z^6/7)

w^9/4z^48/7

w^9/16z^48/49

w^6/4z^14/7

w^3/2z²

Tags

CCSS.HSA.APR.A.1

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

(y⁹)^-2

y¹⁸

y¹¹

1/y¹⁸

y⁹/2

Tags

CCSS.8.EE.A.1

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Evaluate this expression using the quotient rule.

9⁵

9⁹

1⁵

9^-5

Tags

CCSS.8.EE.A.1

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