You will read for 45 minutes if your brother reads for 15 minutes.
<em><u>Explanation</u></em>
You decide to read 30 minutes longer than your brother reads. 
If your brother reads  number of minutes, then 30 minutes longer than
 number of minutes, then 30 minutes longer than  minutes means
 minutes means  minutes.
 minutes. 
As the number of minutes you read is  , so the equation will be:
 , so the equation will be:  
When your brother reads for 15 minutes, then we will just <u>plug  into the above equation</u>. So.....
 into the above equation</u>. So.....

So, you will read for 45 minutes if your brother reads for 15 minutes.
 
        
                    
             
        
        
        
Answer:
option #4 (-oo, +oo) 
Step-by-step explanation:
_______
 
        
             
        
        
        
Answer:
0.5?
Step-by-step explanation:
 
        
             
        
        
        
Yes for the first one, yes for the second one, and yes for the third one although your subtraction equation had the wrong year (its not 1847 its 1846) but the answer was right, 65.