Answer:
a
Step-by-step explanation:
45 - 15 - 15 = 45 - 30
45 - 30 = (15)
Answer:
They are consecutive terms in the Fibonacci Sequence.
Step-by-step explanation:
The sequence goes 1,1,2,3,5,8,13,21,...
Since 13 and 21 are consecutive here, that is the answer.
Answer: The rate of change decreased.
Step-by-step explanation:
1.5, 2.25, 3.375, 5.0625, 7.59375... and so on