Question

Describe a pattern for each sequence. What are the next two terms of the sequence?

1. 24, 22, 20, 18... (1 point)
multiply the previous term by –2; –36, 72
multiply the previous term by –2; 16, 72
subtract 2 from the previous term; 16, 14
add 2 to the previous term; 20, 22
2. 2, 4, 8, 16... (1 point)
add 2 to the previous term; 14, 12
subtract 2 from the previous term; 32, 64
multiply the previous term by –2; –32, 64
multiply the previous term by 2; 32, 64

Answer 1

3. –5, 5, –5, 5... (1 point)
subtract 10 from the previous term; –5, 5
multiply the previous term by 1; 5, 5
add 10 to the previous term; –5, –15
multiply the previous term by –1; –5, 5
Tell whether the sequence is arithmetic. If it is, what is the common difference?

4. 15, 19, 23, 27.... (1 point)
yes; 15/19
yes; 4
yes; 34
no
5. 2, 7, 13, 20... (1 point)
yes; 5
yes; 6
yes; 2
no