XD
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Textbooks... Workbooks.
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I was once homeschooled, ya know. 
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Let me walk you through the problems.
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First of all...
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we know the area of the garden. In order to find how many cups of fertilizer we need, we need to find THE AREA. Then, it's just a matter-of-fact of just multiplying the area by 1/8.
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2. Information not needed? OF COURSE!! The money. Why we need money in this problem?! We find NUMBER OF CUPS, not MONEY NEEDED.
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3. I need to determine how much cups of fertilizer I need. The answer? Oh, find the area. IT's 9 1/3 multiplied by 12, by the way. Then multiply the area by 1/8. BOOM!!
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Need any more help, ask away!!
        
             
        
        
        
Answer : 35 
You have to do 28 plus 7 
And u would get ur answer
        
                    
             
        
        
        
OK.  I used my calculator to evaluate sec(85 degrees).
My calculator doesn't have a "sec" button on it.  
But I remembered that
           sec of an angle = 1 / (cosine of the same angle) .
So I used my calculator to find cos(85), and then I hit the 
" 1/x " key, and got 11.474, which I knew to be sec(85).
        
             
        
        
        
Hey there 
That's easy 
Divide 2750 by 40 and a good estimate would be 68 dollars 
Hope this helps