Unit 4 Test Review- Equivalent Expressions

Which exponential expression equals 7 x 7 x 7 x 7 x 7 x 7 ?

• 6⁷

• 7⁶

• 7⁵

• 5⁷

Which expression has a value of 24?

• 4 + 2²

• (4 + 2) ²

• 4² + 2³

• 4² - 2²

What is the value of x² + 5² if x = 3?

• 19

• 16

• 31

• 34

Rewrite the following expression using the Distributive Property: 3.1(3m + 2n)

• 9.3m + 6.2n

• 3.4m + 3.3n

• 6.1m + 5.1n

• 15.5mn

In the expression "2x² + 3x -5, " 2 and 3 are examples of which of the following?

• terms

• coefficients

• constants

• variables

Which expression is equivalent to 6x + 3x² - 4x ?

• 3x² + 10x

• 2x - 3x²

• 2x + 3x²

• 3x² - 2x

Which expression shows "the quotient of a number and 7"?

• $n\div7$

• $n\ -7$

• $n\ \times\ 7$

• $n\ +\ 7$

In what order should the operations be performed to evaluate : 6x² - 2 , if x= 3?

• First, multiply 6 by 3. Then, square the result. Finally, subtract 2 from the result.

• First, find 3². Then, subtract 2 from the result. Finally, multiply the result by 6.

• First, find 3². Then, multiply the result by 6. Finally, subtract 2 from the result.

• First, multiply 6 by 3. Then, subtract 2 from the result. Finally, square the result.

Which expression is equivalent to "3 times the difference between a number and 12"?

• 3 (n - 12)

• n - 12 x 3

• 3n - 12

• $\frac{n\ -12}{3}$

Which two expressions are equivalent for any value of x?

• 4x - 2 + 5x and 7x

• (11 + 3x) - x and 11 + 2x

• 12 (x - 2) and 12x - 2

• 9(4x) and 13x