120 servings. 
You do this by multiplying 30 by 4 (because each pound can make 4 servings as represented by 1/4 pound) Hope you understand I'm not good with explaining.
        
                    
             
        
        
        
Answer:
12.5 on left side and right side is 20.5 and 17.5
Step-by-step explanation:
Just put them on the other side that the number is on.
 
        
             
        
        
        
Answer:
Step-by-step explanation:
<u>Given expression:</u>
<u>Find its value when x = 4 and y = 1, substitute:</u>
- 3(4 + 1) + 2*4² + (1 + 1)² = 
 - 3*5 + 2*16 + 2² = 
 - 15 + 32 + 4 = 
 - 51
 
 
        
             
        
        
        
You just want to simplify right?!
45. (a^2b^3)(ab)^-2 
= (a^2b^3)(a^-2b^-2)
= b
46. (-3x^3y)^2(4xy^2) 
= (-9x^6y^2)(4xy^2)
= -36x^7y^4
47. 3c^2d(2c^3d^5) / 15c^4d^2
= 6c^5d^6 / 15c^4d^2
= 2/5c1/4x^4
48. -10g^6h^9(g^2h^3) / 30g^3h^3
= -10g^8h^12 / 30g^3h^3
= -1/3g^5h^9
49. 5x^4y^2(2x^5y^6) / 20x^3y^5
= 10x^9y^8 / 20x^3y^5
= 1/2x^6 1/3y^3
50. -12n^7p^5(n^2p^4) / 36n^6p^7
= -12n^9p^9 / 36n^6p^7
= -1/3n^3p^2
(Sorry it’s messy it’d look better if my phone could actually put the numbers to the power)