Answer:
Simple
Rise/Run
for one week they run 10 miles
2 weeks 20 miles
3 weeks 30 miles
4 weeks 40 miles
the rate of change would be 10/1 (Why? Because you rise +10 each time per week.)
divide that it would be 10 (:
gOoD lUCk 
 
second answer copied me so. 
 
        
             
        
        
        
7.980 divide by 0.19 is 42.
        
             
        
        
        
Answer:
$4650
Step-by-step explanation:
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Answer:
X = -8 and X = 2
Step-by-step explanation:
X^2 + 6X - 6 = 10
Bring the 10 over:
X^2 + 6x - 16 = 0
From here, either use the quadratic formula or
manual factorization by finding its roots:
Manually:
(X + 8)(X - 2) = 0
Equate each factor to 0 you will get:
X + 8 = 0  and X - 2 = 0
Solutions are -8 and 2 respectively.