Answer: 77/3 or 25 2/3
Step-by-step explanation:
1. Convert mixed numbers into improper fractions:
 3 1/2 = 3*2+1/2 = 7/2
 2 2/3 = 2*3+2/3 = 8/3
 1 1/2 = 1*2+1 = 3/2
2. Calculate within parentheses
 Multiply and divide from left to right
 Add and subtract from left to right
 
        
                    
             
        
        
        
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 
 minutes means 
 minutes. 
As the number of minutes you read is 
 , so the equation will be:  
When your brother reads for 15 minutes, then we will just <u>plug 
 into the above equation</u>. So.....

So, you will read for 45 minutes if your brother reads for 15 minutes.
 
        
                    
             
        
        
        
a) The expression to find the sale price of pastry =  0.75 x
b)  The regular price of the pastry bought by Kimberly = $2.70
Step-by-step explanation:
Step 1 :
Let x be the regular price of the pastry in the bakery
Percentage of discount = 25%
Amount of discount  = 0.25 x
The expression to find the sale price of pastry = x - 0.25 x = 0.75 x
Step 2 :
Sale price of the pastry bought by Kimberly = $2.03 = 0.75 x
<u>To find the regular price</u>
0.75x = 2.03
x = 
 = 2.70
Regular price of the pastry bought by Kimberly = $2.70
Step 3 :
Answer :
a) The expression to find the sale price of pastry =  0.75 x
b) The regular price of the pastry bought by Kimberly = $2.70
 
        
             
        
        
        
Answer:
The correct answer is b.
Step-by-step explanation:


No real solutions.
 
        
             
        
        
        
Divide by 21 to put the equation in intercept form.
  x/(21/9) + y/(-21/7) = 1
  x/(7/3) + y/(-3) = 1
The x-intercept is (7/3, 0)
The y-intercept is (0, -3)
The 3rd choice is appropriate.