Unit 6 Review

Simplify 4(2b - c)

• 8b - c

• 8b - 4c

• 7bc

• 4bc

Determine the value of the expression below: $20\ -\left(8\ \div4\right)^3\ +7$  

• 21

• 19

• 5

• 7

Translate the following verbal expression into an algebraic expression:

Seven times the difference of a number and two, all divided by three.

• $\frac{7\left(n-2\right)}{3}$

• $\frac{7-n\cdot2}{3}$

• $7n-2\div3$

• $7\left(n-2\right)\div3$

Which expression below is equivalent to
 $3\cdot5\cdot2\cdot5\cdot3\cdot5$  

•  $2^1\cdot3^2\cdot5^3$  

•  $1^2\cdot2^3\cdot3^5$  

•  $2^2\cdot3^5\cdot5^1$  

•  $2^5\cdot3^2\cdot5^1$  

Which of the following cannot be written as an equation?

• eighty times a number, c is three hundred

• three-fifths of a number, r plus fifty

• the quotient of a number and forty-seven is one hundred fifteen

• forty-two is the difference of a number, h and eighty-five

Which two expressions are equivalent?

• $2+\left(3\cdot t\right)\$ and $\left(2+3\right)\cdot t$

• $\left(\frac{10}{w}\right)\ +3\$ and $\frac{10}{\left(w+3\right)}$

• $8-\left(e\cdot2\right)$ and $8-\left(2e\right)$

• $\left(5-3\right)\div d\$ and $5-\left(3\div d\right)$

Which of the following represents the prime factorization of 24?

• $2^3\cdot3$

• $3\cdot8$

• $2^2\cdot6$

• $2\cdot3\cdot4$

Which expression is NOT equivalent to the model shown?

• $2x+7-1$

• $-x+3x+6$

• $2x+6$

• $x^2+6$