Answer:
$3.72
Step-by-step explanation:
Divide $2.79 by 3
$0.93 is the price of one orange
$0.93 times 4 is $3.72
Hope this helps!
 
        
                    
             
        
        
        
Answer:0.75 milligrams will  be present in 24 hours
Step-by-step explanation:
Step 1
 The formula for radioactive decay can be written as 
N(t)=No (1/2)^(t/t 1/2)
 where 
No= The amount of the radioactive substance at time=0=milligrams
 t 1/2= the half-life= 6 hours
t=24 hours
 N(t) = the amount at time t
Step 2--- Solving
N(t)=No (1/2)^(t/t 1/2)
=N(t)=12 x ( 1/2) ^ (24/6)
= 12 x (1/2) ^4
= 12 x 0.0625
= 0.75 milligrams 
 
        
             
        
        
        
Answer:
you can check on a website called "desmos graphing."