Math 119 Exam 1 Review

How many checks were needed?

• 2

• 3

• 4

• 5

True or False?  $8\div4\times2+1=2$  

• True

• False

Which of the following is an example of associative property of addition?

• $\left(2+3\right)+5=2+\left(3+5\right)$

• $\left(3+2\right)+5=\left(2+3\right)+5$

• $2\left(3+x\right)=6+2x$

• $2\times3\times5=5\times2\times3$

Simplify the expression.

• $\frac{1}{4y}$

• $4y$

• $\frac{4}{y}$

• $\frac{y}{4}$

Write  $x\le4$  using interval notation.

•  $\left(-\infty,4\right)$  

•  $\left(4,\infty\right)$  

•  $\left(-\infty,4\right]$  

•  $\left[4,\infty\right)$  

Convert the radical to rational exponent form.

• $a^{\frac{7}{6}}$

• $a^{\frac{6}{7}}$

• $a^{-\frac{7}{6}}$

• $a^{-\frac{6}{7}}$

Which of the following is an example of a polynomial that is a sixth degree trinomial with constant term 5.

• $x^6+5$

• $6x^5$

• $6x^3+x+5$

• $x^6-x+5$

Perform the operation and simplify:  $\left(2x^4\right)^3$  

•  $2x^{12}$  

•  $2x^7$  

•  $8x^{12}$  

•  $8x^7$  

True or False?  $-4^2=-16$  

• True

• False

True or False?  $\sqrt{0}$  does not exist.

• True

• False