1)  How many weeks will Jake and Seth be equal? set the equations equal to each other and solve for x:
5x + 85 = 20x + 40
45 = 15x
<u><em>x = 3 weeks</em></u>
2)  How much money will that be? plug x = 3 back into the equation to solve for y:
Jake:  5(3) + 85 = $100
Seth:  20(3) + 40 = $100
<u><em>answer is $100</em></u>
        
             
        
        
        
The proportion of businesses who did not respond = 54.67%
Given : Total businesses = 150
Businesses responded = 68
Businesses did not respond =  150- 68 = 82
The proportion of businesses who did not respond =
82/150 x 100
54.67%
 
        
             
        
        
        
A varible represents the number u are looking for. 
Example: 
2x + 3x  
        
             
        
        
        
D. f(x)=4 (5/2)^x
Are really good tool for graphing problems is Demos.com
 
        
             
        
        
        
Answer:
y=1/3, x=4/9
y=8, 32/3
x=9, y=27/4
y=20, x=80/3
Step-by-step explanation: