The chosen topic is not meant for use with this type of problem. 
However, if you simplify it, your answer is:
x^2 − 2x − 35
 
        
                    
             
        
        
        
Answer:
A bakery makes y pies from 20 pounds of apples sold for x dollars.
Step-by-step explanation:
 
        
                    
             
        
        
        
<span>To convert a percentage to a decimal you move the decimal two places to the left. Therefore:
15.% becomes .15
You then multiply this decimal to the number you are trying to find the percentage of.
.15 × 60 = 9.
9 is 15% of 60.
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You need to expand (4x-7)(x+3), multiplying each term in the first bracket by each term in the second bracket, in order to get 4x^2+5x-21. Hope that helps!