Arithmetic and Geometric Sequences

Which functions describe the sequence -5, 0, 5, 10, . . .? PICK 2

• f(1)=-10; f(n)=f(n-1)+5

• f(1)=-5; f(n)=f(n-1)+5

• f(x)=5x-10

• f(x)=5x-5

Tags

CCSS.HSF.IF.A.3

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

Which functions describe the sequence -1, -7, -13, -19, . . .? PICK 2

• f(1)= -1; f(n)=f(n-1)-6

• f(1)= -1; f(n)=f(n-1)+6

• f(x)= 6x+5

• f(x)= -6x+5

Tags

CCSS.HSF.IF.A.3

If f(1)=100, f(x)=f(x-1)*(1/5), find the first 5 terms of this sequence.

• 100, 20, 4, 4/5, 4/25

• 100, 95, 90, 85, 80

• 100, 500, 2500, 12500, 62500

• 100, 105, 110, 115, 120

Tags

CCSS.HSF.IF.A.3

Write the first 5 terms represented by the equation f(x)=3x+2

• 2, 5, 8, 11, 14

• 5, 8, 11, 14, 17

• 3, 5, 7, 9, 11

• 2, 6, 18, 54,162

Tags

CCSS.HSF.BF.A.2

If f(x)= -9x+12, then f(20)=______________?

• -180

• 192

• -192

• -168

Tags

CCSS.HSF.IF.A.2

If f(x)=2x+17, then f(12)=___________.

• 24

• 41

• 17

• 30

Tags

CCSS.HSF.IF.A.2

Which of the following represents the sequence 3, 6, 9, 12, ...

• 1, 3, 5, 7, ...

• f(1)=3; f(x)=f(x-1)*2

• f(x)=27(1/3)^x

• 
• 

Tags

CCSS.HSF.IF.A.3

Which of the following represents the function

f(x)= -3x+9

• 1, 3, 5, 7, ...

• f(1)=3; f(x)=f(x-1)*2

• f(x)=27(1/3)^x

• 
• 

Tags

CCSS.HSF.IF.A.3