2.9 Proficiency exam

( [link] ) $8(6-3)-5\cdot 4+3(8)(2)÷4\cdot 3$

( [link] ) ${\left\{2{(1+7)}^2\right\}}^0$

( [link] ) $\frac{1^8+4^0+3^3(1+4)}{2^2(2+15)}$

( [link] ) $\frac{2\cdot 3^4-{10}^2}{4-3}+\frac{5(2^2+3^2)}{11-6}$

( [link] ) Write the appropriate relation symbol $(>,<)$ in place of the $*$ .
$5(2+11)\ast 2(8-3)-2$

( [link] ) $(x-1)$ times $(3x\text{plus}2)$ .

( [link] ) A number divided by twelve is less than or equal to the same number plus four.

( [link] ) Locate the approximate position of $-1.6$ on the number line.

( [link] ) Is 0 a positive number, a negative number, neither, or both?

( [link] ) Draw a portion of the number line and place points at all even integers strictly between 14 and 20.

( [link] ) Draw a portion of the number line and place points at all real numbers strictly greater than $-1$ but less than or equal to 4.

( [link] ) What whole numbers can replace $x$ so that the following statement is true? $-4\le x\le 5$ .

( [link] ) Is there a largest real number between and including 6 and 10? If so, what is it?

( [link] ) Use the commutative property of multiplication to write $m(a+3)$ in an equivalent form.

( [link] ) Use the commutative properties to simplify $3a4b8cd$ .

( [link] ) Use the commutative properties to simplify $4(x-9)2y(x-9)3y$ .

( [link] ) Simplify 4 squared times $x$ cubed times $y$ to the fifth.

( [link] ) Simplify $(3)(3)(3)aabbbbabba(3)a$ .

( [link] , [link] ) ${(3a{b}^2)}^2{(2a^{3}b)}^3$

( [link] , [link] ) $\frac{x^{10}{y}^{12}}{x^2{y}^5}$

( [link] , [link] ) $\frac{52x^7{y}^{10}{(y-x^4)}^{12}{(y+x)}^5}{4y^6{(y-x^4)}^{10}(y+x)}$

( [link] , [link] ) ${(x^n{y}^{3m}{z}^{2p})}^4$

$\frac{{(5x+4)}^0}{{(3x^2-1)}^0}$

$\frac{x^{\nabla }{x}^{\square }{y}^{\Delta }}{x^{\Delta }{y}^{\nabla }}$

( [link] , [link] ) What word is used to describe the letter or symbol that represents an unspecified member of a particular collection of two or more numbers that are clearly defined?