Answer:

Step-by-step explanation:

Given that:

To evaluate the expression, we must simply substitute the given value of  , which is
, which is  , for
, for  :
:

Multiply:

Subtract:

-
To check your work, simply set the given expression equal to our solution,  :
:

Add  to both sides of the equation:
 to both sides of the equation:

Divide both sides of the equation by the coefficient of  , which is
, which is  :
:

Since it matches the given value of  , our solution is correct!
, our solution is correct!
 
        
                    
             
        
        
        
Answer:
there are 6 cakes if there are 60 cookies
Step-by-step explanation:
1:10 
60÷10=6 
1:10 (multiply both sides by 6)
6:60 there are 6 cakes
 
        
             
        
        
        
Answer: $108.8
Step-by-step explanation: you do 109.00-20% and you get 108.8
 
        
             
        
        
        
Explanation:
A function is a relationship where any one x-value/input only has <u>one </u>corresponding y-value/output. (note: a y-value can have multiple x-values). 
> This can be called "assigning one y-value to every x element".
The vertical line test places a line that would connect all y-values of an x-value (that is, if it were to have multiple y-values). If multiple points can be found along the vertical line, it is, therefore, by the definition of a function, not a function. (Because an x-value will have more than one y-value).
So, a graph that fails the vertical-line test does not represent a function because an x-value will correspond with more than one y-value. 
hope this helps!!