Answer:
- 7, 28, - 112, 448
Step-by-step explanation:
To obtain the next term in a geometric sequence multiply the previous term by r
Given
a₁ = - 7 and r = - 4, then
a₂ = - 7 × - 4 = 28
a₃ = 28 × - 4 = - 112
a₄ = - 112 × - 4 = 448
The first four terms are - 7, 28, - 112, 448
