Algebra Math sequence

Question

Complete the sentence about the sequence using the drop down options.

The sequence 0.5, 2, 8, 32, 128 is a/an [ ] sequence because the sequence has a common [ ] of 

Answer choices

arithmetic or geometric

 difference or ratio

1.5, 4, 6.

Answer 1

common ratio = 4

It's a geometric sequence. As its terms have a common ratio = 4. each term is 4 times the preceding term.

2 is 4 times 0.5

8 is 4 times 2

32 is 4 times 8

128 is 4 times 32

next term in the sequence is 4 times 128 = 512

Answer 2

In an arithmetic sequence the values are separated by a constant amount - is that true for these numbers? Subtract the previous number from the current number to check and find the difference

In an geometric sequence each value is multiple of the previous value - is that true for these numbers? Divide the current number by the previous number to check and to find the ratio