Question 1

What is $0.000045$ written in scientific notation?

Accepted Answer

$4.5$ x $10^{-5}$

Answer

$45$ x $10^{-4}$

Answer

$4.5$ x $10^5$

Answer

$45$ x $10^4$

Question 2

Which of the equations below is equivalent to $3(x + 4) = 3x - 8 + 2x $?

Accepted Answer

$3x + 12 = 5x - 8$

Answer

$3x - 12 = x - 8$

Answer

$3x + 12 = x + 8$

Answer

$3x + 4 = x - 8$

Question 3

How can you solve $\frac{1}2$$x= 8$? More than one correct answer.

Accepted Answer

Multiply both sides by $2$

Answer

Multiply both sides by $\frac{1}2$

Answer

Subtract each side by $\frac{1}2$

Question 4

Rational or irrational?   $7.\overline{46}$

Accepted Answer

Rational

Answer

Irrational

Question 5

What is $2.05$ x $10^3$ written in standard notation?

Accepted Answer

2050

Answer

0.00205

Answer

205

Answer

205000

Question 6

Which of the following equations represents an identity, with infinite solutions?

Accepted Answer

$4x + 2 = 4x + 2$

Answer

$10x + 1 = 10x$

Answer

$5x + 2 = 22$

Question 7

Evaluate $9^0$.

Accepted Answer

1

Answer

-9

Answer

9

Answer

0

Question 8

Evaluate $(5$ x $10^2)$$(4$ x $10^3)$. Write your answer in scientific notation.

Accepted Answer

$2$ x $10^6$

Answer

$20$ x $10^6$

Answer

$2$ x $10^5$

Answer

$2$ x $10^{-6}$

Question 9

Simplify $\frac{32x^6}{8x^{-2}}$

Accepted Answer

$4x^8$

Answer

$24x^4$

Answer

$4x^4$

Answer

$24x^8$

Question 10

Solve $10=2-4x$.

Accepted Answer

$-2$

Answer

$-2.5$

Answer

$3$

Answer

$2$

Question 11

Rational or irrational?       $\sqrt{36}$

Accepted Answer

Rational

Answer

Irrational

Question 12

Simplify  $(3y^{2}b^{3})^2$

Accepted Answer

$9y^{4}b^{6}$

Answer

$6y^{4}b^{6}$

Answer

$9y^{4}b^{5}$

Question 13

California has a population of $4$ x $10^7$.  The population of the United States is $3$ x $10^8$. How many times greater is the population of the US than the population of California?

Accepted Answer

About 7.5 times greater.

Answer

About 1.5 times greater.

Answer

About 2 times greater.

Answer

About 6 times greater.

Question 14

Simplify $(-2x^{3}y^{5})$$(6x^{-2}y^{})$

Accepted Answer

$-12xy^{6}$

Answer

$4xy^{5}$

Answer

$12x^{5}y^{5}$

Question 15

Write $m^{-3}$ with a positive exponent.

Accepted Answer

$\frac{1}{m^3}$

Answer

$-m^3$

Answer

$m^3$

Question 16

Solve.  $4(x-2) + 2x = 10$

Accepted Answer

$x = 3$

Answer

$x = 2$

Answer

$x = 4.5$

Answer

No Solution

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