Start with 21. Use the rule minus 1 to write a sequence of five numbers. Then, start with minus 2 to write a sequence of five numbers. Compare the two sequences

21, 20, 19, 18, 17

-2, -3, -4, -5, -6

Step-by-step explanation:

term-to-term rule: -1 (subtract 1)

In the first sequence all the terms are positive and in the second one they are negative

5y

step-by-step explanation:

341

step-by-step explanation:

all you have to do is 9x31 (which equals 279) and then 20x31 (which equals 620). then you have to subtract. 620-279=341.