7 gallons of gasoline=350 miles 
1 gallon of gasoline=50 miles 
0.02 gallons =1 mile 
4.00×0.02=0.08 cents per mile
        
             
        
        
        

 - the number of green blocks which is equal to the number of favourable events

 - the number of all blocks, which is equal to the number of all possible outcomes
 
 
        
                    
             
        
        
        
Answer:
Population after 4 years = 49 (nearest unit)
Population after 5 years  = 47 (nearest unit)
Step-by-step explanation:
Yearly decrease = 4.6%
Decrease factor (what's left) = (100-4.6)% = 0.954
Current population, P = 60
population after n years = P(0.954)^n  (to the nearest unit)
Population after 4 years = 60(0.954)^4 = 49.7 = 49 (nearest unit)
Population after 5 years  = 60(0.954)^5 = 47.4 = 47 (nearest unit)
 
        
                    
             
        
        
        
Answer:
34
Step-by-step explanation:
-5y=-45
y=-45/-5
=9
y=9
then 
5y-11=5×9-11
=45-11
=34
 
        
                    
             
        
        
        
Answer:
- 13x² - 19x + 23
- -16x +17
Step-by-step explanation:
1 . (4x² - 9x + 16) + (7 + 9x² - 10x)
4x² - 9x + 16 + 7 + 9x² - 10x
13x² - 19x + 23
2 . (-2x + 6) - (14x - 11)
-2x + 6 - 14x + 11
-16x +17