Answer:
The plans will cost the same when the amount you have to pay for talking for "x" minutes on Plan A is the same has what you have to pay for talking for the same number of "x" minutes when using Plan B.
  
$$ Plan A = $$ Plan B
  
To find the charge on each plan we add the base rate to the per minute call rate for each.
  
Plan A = $27 + $0.11x
Plan B = $13 + $0.15x
  
Let's drop the $ sign for now and get rid of the decimal point by multiplying by 100.
  
2700 + 11x = 1300 + 15x
  
Subtracting 11x and 1300 from both sides:
  
4x = 1400
  
x = 350 min.
  
Using this result the plans both cost $65.50 for 350 min of talk time.
Step-by-step explanation:
boom   :)
 
        
             
        
        
        
Answer:
   -5, multiplicity 3; +9, multiplicity 2; -1
Step-by-step explanation:
The roots of f(x) are those values of x that make the factors be zero. For a factor of x-a, the root is x=a, because a-a=0. If the factor appears n times, then the root has multiplicity n.
f(x) = (x+5)^3(x-9)^2(x+1) has roots ...
- -5 with multiplicity 3
- +9 with multiplicity 2
- -1
 
        
             
        
        
        
Answer:
Step-by-step explanation:
g(10) = (10^2-8)/(10+4)= (100 - 8)/14 = 92/14 = 48/7 or 6 6/7
 
        
             
        
        
        
Noah is right because 75% of 10 is 7.5 and 10% of 30 also equals 7.5