Which of the following sets of data does NOT represent a function?

Set A

x

y

6

3

8

4

5

7

9

2

Set B

x

y

0

3

1

8

2

8

3

-7

Set C

x

y

10

7

20

11

30

9

40

7

Set D

x

y

3

9

2

2

8

-3

2

1

a.

Set A

b.

Set B

c.

Set C

d.

Set D

Find the amplitude and period of the graph of y=7cos (30+pi/6)

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Laura had some money in her wallet she spent $18.62 buying groceries and had $43.55 left how much money did she have in her wallet before she bought the groceries

Which expressions are equivalent to x+x+x + 2x+x+x+2x, plus, x, plus, x, plus, 2?

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What is the relationship of the scale factors

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Is16 over 81 a irrational number

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