Quiz 1: Numbers, Sentences, and Problems

Evaluate 3(5 - 8) - 7

-16

Evaluate (-12)(-2)^2

-48

Simplify 15 - 12 - 8 + 4 - 6 + 1

-6

Evaluate 8 -|-8|

0

Evaluate 4|-2| - |-3|

5

Evaluate |-5|

5

- 5 > - 4

False

5 > 2 < 1

False

Graph the following expression on the number line by placing the dot in the proper location. | x |= 5

There are two dots. One goes on -5 on the number line and the other goes on 5. So -5 and 5 are where the two dots should be placed.

Graph the following expression on the number line by placing the dot in the proper location. |2 - x | = 4

There are two dots. One goes on the -2 on the number line and the other goes on 6. So -2 and 6 are where the two dots should be placed.

Graph the following expression on the number line by placing the dot in the proper location. | x - 1 | = 5

There are two dots. One goes on the -4 on the number line and the other goes on 6. So -4 and 6 are where the two dots should be placed.

2 < 3 < 5

True

| x | + 2 > | x | for all real numbers x.

True

|- x| ≥ 0 for all real numbers x.

True

Solve |p + 2| = 10

{-12, 8}

Solve |3x - 4| = 6

{-2/3, 10/3}

Solve 2|x| = 3

{-3/2; 3/2}

Solve |x| = 5

{-5, 5}

Solve |a| = -6

∅