Answer:
1-5n
Step-by-step explanation:
you would do 1-5n because its in brackets, the order of opperation is
Brakcets
Order (Power ofs)
Division and Mulitplication
then do addition and subtraction
when doing division and multiplication and subtraction and addition go left to right to find what part goes 1st. 
Hope this helped!
 
        
             
        
        
        
1) Area = (b*h)/2 = (9*5)/2 = 45/2 = 22.5 (Letter A)
2) Area = b*h = 8*14 = 112 (Letter D)
3) Surface area of a prism is SA=2B+ph (B = area of the base, p = perimeter of the base, h = height)
B = 15 * 5 = 75 cm^2
p = 15 + 5 = 20 cm
SA = 2*75 + 20*7 = 150 + 140 = 290 (G)
4) V = (B*H*L)/2 = (15*7*5)/2  = 525/2 = 262.5 cm^3 (G)
5) V = 9^3 = 81 cm^3 worth of wrapping (A)
6) V = (B*H*L)/2 = (13*6*8)/2 = 312 cube feet (J)
It gave me ADGGAJ. I don't know if this is right, but I atleast tried to do something, right?
 
        
                    
             
        
        
        
-3x-2y=10
-2y=3x+10
y=-3/2x -5
If you put x as a value of 0 you will get that the y-intercept will end up being -5
        
             
        
        
        
Answer:
   about 20
Step-by-step explanation:
The numbers round to 600/30 = 20, which is a reasonable estimate.
You can refine this by doing the next step of long division:
   29×20 = 580
Subtracting this from 591.3 give 11.3, so the fraction is ...
   11.3/29 ≈ 10/30 = 1/3
A better estimate is 20 1/3.
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A calculator tells you the quotient is about 20.3897.