Quiz on the topic Ari/Geo seq and Series - 2O - May 12 2023

Select all arithmetic sequences.

• 20, 40, 80, 160, 320,...

• 12, 6, 0, -6, -12,....

• 20, 22.5, 25, 27.5, 30, ...

• 3, -6, 12, -24, 48, ...

Which pattern of numbers represents a geometric sequence? select the correct answer

• 2, 4, 6, 8, 10..

• 3, 9, 15, 21, 27,...

• 25, 15, 5, -5, -15, ...

Find the next 3 terms in the sequence -5, -3, -1,

______, _______ , ________,

select the correct answer!

• -1, -3, -5

• 1, 3, 5

• 2, 5, 7

• 3, 5, 8

Find the 6th term for the sequence

12, 24, 48, ...

Select the correct answer

• 56

• 84

• 384

• 320

• 31

• 100

Is this sequence Arithmetic, Geometric, or Neither?

2, 9, 7, 14, 12, 19, ...

• Arithmetic

• Geometric

• Neither

Which sequence is an arithmetic sequence?

• 3, 6, 2, 7, ...

• 3, 6, 12, 24, ...

• 3, 6, 10, 15, ...

• 3, 7, 11, 15, ...

Which sequence is a geometric sequence with a common ratio of 2?

• 5, 3, 1, -1, ...

• 5, 7, 9, 11, ...

• 5, 10, 20, 40, ...

• 5, 15, 45, 135, ...

The first term in an arithmetic sequence is -8 and the common difference is 14.  What is the 28th term given the equation a_n = a₁ + d (n - 1)

• 378

• 1024

• -324

• 370

The first term in a geometric sequence is 160 and the common ratio is 1/2.  What is the 7th term given the equation a_n = a₁ (r)^n-1

• 5

• 2.5

• 10

• 1.25