Answer:

Step-by-step explanation:
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Answer: One solution
Step-by-step explanation:
Given
-5x-8=8
Add 8 on both sides
-5x-8+8=8+8
-5x=16
Divide -5 on both sides
-5x/-5=16/-5
x=-3.2
Therefore, it has one solution
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Answer: 256 units squared
Step-by-step explanation:
So basically you times 4*4*2*8.
The decimal multiplier to decrease by 30 is .7