Answer:
The answer is d=37 in
Step-by-step explanation:
 
        
             
        
        
        
Answer:
9.8ft
Step-by-step explanation:
 
        
             
        
        
        
The answer is 137° because supplementary means the 2 angles must equal 180°
        
             
        
        
        
Step-by-step explanation:
y = ax^n + bx^(n-1) ... + z
(0, 1) tells us that the constant term z = 1.
because x = 0 eliminates all other terms. and as the sum is 1, that means z = 1.
for the other pairs I strongly suspect
(-1, 3) : 2×(-1)² + 1 = 2×1 + 1 = 3
(-2, 9) : 2×(-2)² + 1 = 2×4 + 1 = 9
so, the fitting equation is
y = 2x² + 1