Answer: option d.
Step-by-step explanation:
 If <em>y </em>varies directly as <em>x</em> and <em>z</em>, the form of the equation is:
 
 Where<em> k</em> is the constant of variation.
 If y=4 when x=6 and z=1 then substitute these values into the expression and solve for <em>k:</em>
 
<em> </em>Substitute the value of <em>k</em>  into the expression. Then, the equation is:
 
 To find the value of <em>y </em>when x=7 and z=4, you must substute these values into the equation. Therefore you obtain:
 
 
 
<em> </em>
 
        
                    
             
        
        
        
Answer:
since you have a google browser type the following equation into the bar without searching for it.
Step-by-step explanation:
the instructions or search online.  
 
        
             
        
        
        
Answer:
g=18
Step-by-step explanation:
Isolate the variables by dividing each side by -2.5.
 
        
                    
             
        
        
        
how many times does 5 go into 78
78/5
it goes 15 times with  3 left over  (15*5 = 75  75+3 = 78)
15 3/5 ft
 
        
                    
             
        
        
        
The answer is 4 hope this helps