Obviously, it's not rational, because it's the sum of two square roots, so cancel out A and B right away.
If we solve it
 
sqrt (18) + sqrt (2)
= sqrt (9*2) + sqrt (2)
= 3 sqrt (2) + sqrt (2)
= 4 sqrt (2)
D :D
        
             
        
        
        
It's a linear function. The graph is a straight line, therefore we need only two points.
Select any value of x and calculate the value of y:
y = -3x + 4
for x = 0 → y = -3(0) + 4 = 4 → (0, 4)
for x = 2 → y = -3(2) + 4 = -2 → (2, -2)
 
        
             
        
        
        
Answer: I think its B 
Step-by-step explanation: hoped this helped :)
 
        
             
        
        
        
Answer: Quest 1 final result. (I looked all this up)
 (2x -1) * (5x squared - 2x + 6)
 _____________________. 
 4
I could not find the work for part two but I got the answer: x=3,7