You can simply find out the percentage of the calories from the sugar with this formula :
165/250 x 100% 
You will find out that the percentage would be 66 %
hope this helps
        
                    
             
        
        
        
Answer:
See explanation
Step-by-step explanation:
Plot the solution sets to both inequalities.
1. For the inequality  First, plot the dotted line
 First, plot the dotted line  (dotted because sign is without notion "or equal to"), then choose correct part by substitution coordinates of the origin.
 (dotted because sign is without notion "or equal to"), then choose correct part by substitution coordinates of the origin.

so the origin does not belong to the needed part. Shade the part, which does not include origin.
2. For the inequality  First, plot the dotted line
 First, plot the dotted line  (dotted because sign is without notion "or equal to"), then choose correct part by substitution coordinates of the origin.
 (dotted because sign is without notion "or equal to"), then choose correct part by substitution coordinates of the origin.

so the origin does not belong to the needed part. Shade the part, which does not include origin.
3. Find the common region of these two shaded parts - this is the solution to the system of two inequalities.
 
        
             
        
        
        
Answer:
See attached
Step-by-step explanation:
Given function:
Table and graph are attached
Zeros are included in the graph
<u>Zero's are obtained:</u>
x = 0 ⇒ y = 8
y = 0 ⇒  Solving quadratic equation 
- -2x² + 5x + 8 = 0
- x = (-5 ± √(25 + 2*4*8))/-4
- x = 3.608
- x = -1.108
So zeros are (0, 8), (3.608, 0) and (-1.108, 0)