Question

This is about arithmetic sequences and recursive vs explicit
3. Which formula would you use for this problem: Find the next 3 terms of this sequence: 15, 9, 3, -3, ...
4. Which formula would you use for this problem: Find the 73rd term of this sequence: -12, -8, -4, 0, ...
5. What does "n" stand for in each equation?

Answer 1

Answer:

3. 15 - 6(n-1)

4. -12 + 4(n-1)

5. n stands for the position of the given value from the initial value in the series .

Step-by-step explanation:

3. 15 , 9 , 3 , -3 , [15 - 6 × 4] , [15 - 6 × 5] , [15 - 6 × 6] , ...

=> 15 , 9 , 3 , -3 , -9 , -15 , -21 , ...

4. -12 , -8 , -4 , 0 , ... [-12 + 4 × 72]

=> -12 , -8 , -4 , 0 , 276