B. 4: for x-4
D. -6: for x-6
-8, -19, -30, -49 , -60
<u>Step-by-step explanation:</u>
Here we have the following sequence :
-8, -19, -30, _ , _
- First term of sequence is -8 .
- Second term of sequence is -19 :

- Third term of sequence is -30 :

- Fourth term of sequence is :

- Fifth term of sequence is :
Following sequence was an AP( Arithmetic Progression ) with first term as -8 i.e.
and common difference
having general equation as :
.
Answer:
D) 1078
Step-by-step explanation:
-4 + 20- 100 + 500 - 2500 + 12,500 - 62,500 + 312,500 = 260,416