Idk to be honest but someone will definitely help you
Answer:
The equivalent expression is 
Step-by-step explanation:
Additional of complex numbers:
When we add complex numbers, we add both it's real parts and imaginary parts.
In this question:

The equivalent expression is 
Answer:
8*16.8 which is 302.4
Step-by-step explanation:
Answer:
Rick ran 5.6 miles on Thursday.
Step-by-step explanation:
Let's first find the speed Rick ran on Wednesday.
D=RT
4.2 = (3/4)R
R = 5.6 mph.
D=RT
D=(5.6 mph)(1)
D=5.6 miles
Let me know if this helps!