Answer:
answer is d
Step-by-step explanation:
Answer:
she would save $47 if she waited.
Step-by-step explanation:
Basically each part of the first complex number gets multiplied by each part of the second complex number. You are multiplying 2 binomials.
(15 + 56i(7 + 4i)
= 105 + 60i + 392i + 224i^2
= 105 + 452i - 224 ( because i^2 = -1)
= - 119 + 452i
Answer: Option B
Step-by-step explanation:
