Answer:
Hope this helps sorry I'm in class right now
Step-by-step explanation:
 
        
             
        
        
        
Well if you buy only 1 of each, it would cost you 7.85 in total. if you subtract that from 20, it equals 12.15.
you can also make it a linear equation if you want more or less than 1 fruit and or sandwich 
s=sandwich
f=fruit
5.7f+2.15f=20
        
             
        
        
        
Answer:
(x + 9) (x - 8)
Replace a with 9
and b with -8
Step-by-step explanation:
 
        
             
        
        
        
Answer:
19.5
Step-by-step explanation:
3r+(7+8)/(t-3)
3(4)+(15)/(5-3)
12+(15/2)
12+7.5
19.5