Answer:
y=15
Step-by-step explanation:
3y+27=5y-3
27=2y-3
30=2y 
y=15
Thats assuming A and B are equal ^ 
Hope this helps :)
 
        
             
        
        
        
Answer:
-3(3+4x)
Step-by-step explanation:
 
        
             
        
        
        
Step-by-step explanation:
First, find the zeroes of the parabola







So the zeroes or where the curve crosses the x axis is at 4 and -3.
Now, we take the derivative of the function.

Plug in -3, and 4 into the derivative function 


So at x=-3, our slope of the tangent line is -7 and must pass through (-3,0). So we use point slope formula.



At x=4, our slope of tangent line is 7, and pass through (4,0) so


So the equations of tangent is


 
        
             
        
        
        
We will use a system of equation for this one. 
P=Peanuts; C=Cashews
P+C=20
This represents the pounds.
10P+9C=191
We can make the first equation equal C.
C=20-P
10P+9(20-P)=191
10P+180-9P
P+180=191
P=11
There are 11 pounds of peanuts, which means there's 9 pounds of cashews.