Answer:
We conclude that eighty percent of bike tires last at most 14.4 months.
Step-by-step explanation:
We know that a pair of bike tires can last 18 months if used every day.
We calculate how much eighty percent of the tire will last in months.
We have the following proportion:

We conclude that eighty percent of bike tires last at most 14.4 months.
 
        
             
        
        
        
Answer:
   (7, 46)
Step-by-step explanation:
The offered answer choices have x-values of 7, 9, 10. The corresponding upper limit of y-value is ...
   x=7 : y < 8·7 -3 = 53 . . . . . 46 is in the solution set, 60 is not
   x=9 : y < 8·9 -3 = 69 . . . . 82 is not in the solution set
   x=10 : y < 8·10 -3 = 77 . . . . 89 is not in the solution set
Of the choices offered, only (7, 46) is in the solution set.
 
        
             
        
        
        
Answer:
123
Step-by-step explanation:
 
        
             
        
        
        
Answer:
option 1 is equivalent to 3^2.3^5
 
        
                    
             
        
        
        
You can set up a simple algebraic equivalent to find a number equivalent to 200 after being multiplied by 3 and added 11 to.
3x+11=200
3x=189
x=63
Had to edit! Realized what I had done wrong