Exam 1: Real Numbers and Algebraic Expressions

List all the elements of B that belong to the given set. -B= $\left\{ 11 , \sqrt { 7 } , - 23,0 , \frac { 3 } { 4 } , - \frac { 4 } { 3 } , 7.3 , \sqrt { 25 } \right\}$ Natural numbers

Find the opposite (or additive inverse) of the number. - -26

Use an associative property to write an equivalent expression. - $7 \cdot ( 8 z )$

Determine whether the statement is true or false. -All integers are natural numbers.

Evaluate the expression. - $( 4 x ) ^ { 0 } + 4 x ^ { 0 }$

Write the sentence as an equation. -If 5 times x is added to -4 , the result is equal to 9 times x .

Write the sentence as an equation. -Five more than four times x is the same as x increased by 35 .

Simplify. - 5x - 6y + 4x + 8y

Simplify. --8(10r + 3) + 5(8r + 8)

Find the absolute value. -| - 10|

Simplify. Write the answer using positive exponents only. - $\left( \frac { x y ^ { 5 } } { x ^ { 5 } y } \right) ^ { - 2 }$

Use the distributive property to multiply. -1/2 (6 x-4)

Find the opposite (or additive inverse) of the number. - $\frac { 6 } { 7 }$

Write the number in scientific notation. - 0.000009225

Add or subtract as indicated. - $- \frac { 3 } { 4 } - \left( - \frac { 5 } { 8 } \right)$

Simplify. -(7x - 9) - (2x + 1)

Simplify. -22 - 24 ÷ 2(5)

Find the value of the expression. - $( - 12 ) ^ { 2 }$

Find the root. - $\sqrt [ 3 ] { 1 }$

Simplify. Write the answer using positive exponents only. - $\frac { 3 ^ { - 7 } x ^ { - 3 } y ^ { 2 } } { 3 ^ { - 4 } x ^ { - 6 } y ^ { 4 } }$