geometric and arithmetic sequences

Which EXPLICIT function describes the sequence 3, 7, 11, 15, ...?

• f(1)=3; f(n)=f(n-1)+4

• f(1)=4; f(n)=f(n-1)+3

• f(x)=3x+4

• f(x)=4x-1

Tags

CCSS.HSF.BF.A.2

Which EXPLICIT function describes the sequence 500, 250, 125, ... ?

• f(1)= 500; f(n)=f(n-1)*1/2

• f(x)=1000(1/2)^x

• f(x)=1000(2)^x

• f(1)=500; f(n)=f(n-1)*2

Tags

CCSS.HSF.LE.A.2

Is this sequence arithmetic, geometric, or neither?
{26, 22, 18, 14, ...}

• Arithmetic
• Geometric
• Neither

Tags

CCSS.HSF.BF.A.2

Is this sequence Arithmetic, Geometric, or Neither?
{2, 9, 7, 14, 12, 19, ... }

• Arithmetic
• Geometric
• Neither

Tags

CCSS.HSF.BF.A.2

What is the 38th term of this sequence?
{26, 22, 18, 14, ... }

• -4
• 10
• -122
• 174

Tags

CCSS.HSF.BF.A.2

What is the common difference in this sequence?
{48, 32, 16, 0, ... }

• 1/2
• 2
• -8
• -16

Tags

CCSS.HSF.BF.A.2

Find the 10th term of this sequence:
{96, 48, 24, 12, ... }

• 3/16
• 1/2
• 6
• 3

Tags

CCSS.HSF.BF.A.2

Dividing by 5 is the same as...

• × 5
• ÷ 1/5
• - 5
• × 1/5

What are the first three terms of the sequence defined by the following equation?
a_n = 7 + (n - 1)5

• 7, 35, 175
• 7, 2, -3
• 12, 17, 22
• 7, 12, 17

Tags

CCSS.HSF.BF.A.2

This is an arithmetic sequence. 5, 2, –1, –4, . . .

What is a₇ ?

• -13

• -11

• -18

• -22

Tags

CCSS.HSF.BF.A.2