Answer:
   (1)  68.811 L
Step-by-step explanation:
The amount being subtracted is ...
   16 + 0.18 + 0.009 = 16.189 . . . . liters
The difference is ...
   85.000 -16.189 = 68.111 . . . liters
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<em>Additional comment</em>
cL is the SI unit "centiliters." The prefix "centi-" mean 1/100 or 0.01 units. Then 18 cL = 18 × 0.01 L = 0.18 L.
mL is the SI unit "milliliters." The prefix "milli-" means 1/1000 or 0.001 units. Then 9 mL = 9 × 0.001 L = 0.009 L.
 
        
             
        
        
        
Let x = John's age now
half of what johns age was 4 years ago: (1/2)(x-4)
is equal to one third of what it will be in 5 years time: (1/3)(x+5)
  
(1/2)(x-4) = (1/3)(x+5)
  
3(x-4) = 2(x+5)
  
3x - 12 = 2x + 10
 
        
             
        
        
        
In mathematics, a polynomial<span> is an expression consisting of variables (also called indeterminates) and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponents of variables. An example of a </span>polynomial<span> of a single indeterminate x is x</span>2<span> − 4x + 7.</span>
        
             
        
        
        
Answer:
You plug in numbers into the y=mx+b equation and solve for which ever one you are finding for.
m=slope
x=x intercept
b=y intercept
apply the numbers to this equation and solve or x