Answer:
1. -20, -23, and -26.
2. 78, 83, and 88.
3. 1
Step-by-step explanation:
The next three terms are -20, -23, and -26 because it is decreasing by 3 each time.
This time it is just increasing by 5.
This time the answer is 1 because if n does not have a number then it turns into 1. 1 minus 1 is 0 then 0 times 9 is 0. Then a1 is also equal to 1 so one plus 0 equals 1.
I hope this helped and your welcome.
