Answer:
option C

Step-by-step explanation:
we have

using a graphing tool 
see the attached figure N
The range is the interval--------> (-∞,8]

case A) 
using a graphing tool
The range is the interval--------> [-8,∞)

case B) 
using a graphing tool
The range is the interval--------> [8,∞)

case C) 
using a graphing tool
The range is the interval--------> (-∞,8]

case D) 
using a graphing tool
The range is the interval--------> (-∞,-8]

 
        
             
        
        
        
Answer:
 Ryo ordered  of the amount of eggs his restaurant needed
 of the amount of eggs his restaurant needed
Step-by-step explanation:
 Let's call z the number of eggs the restaurant needs
 Ryo ordered 240% of the eggs he needed. Then Ryo ordered:
  z.
z.
 This fraction can be simplified by dividing by 10 in the numerator and denominator.
 Then it is:
 
 It can be further simplified by dividing by 2 in the numerator and denominator:
  z
z
 Ryo ordered  of the amount of eggs his restaurant needed
 of the amount of eggs his restaurant needed
 
        
             
        
        
        
<span>x²-x-30=0
factor this equation first
(x-6)(x+5) = 0
x - 6 = 0
x + 5 = 0
x = 6 , x = -5
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The right answer for the question that is being asked and shown above is that: "The southern California study with a margin of error of 4.9%." the study has the smallest margin of error for a 98% confidence interval is that The southern California study with a margin of error of 4.9%.<span>
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Answer: Complementary angles. x = 60
How I got it.
x - 30 + x = 90
then solve for x
Hope this helps!