He spend one hour and twenty five minutes (1:25)
All of them have the same answer of -8 except the last one.
Range=highest number-lowest number
15-5=10
Range=10
Answer:
the answer is A and B
Step-by-step explanation:
3 -1i + 21i -7i2 now you have to fix the last factore because you have to change the imaginery i this would give you the answer of 3 - 1i + 21i +7 now add common factor which would give you the final answer of 3 +20i +7