The total number of problems she needs to grade is 6.
        
             
        
        
        
Answer:
Step-by-step explanation:
What are we calculating ??? If it is volume of a cone=1/3πr^2h
1/3×3.142×4×4×6
=100.54units cube
To calculate volume of cylinder=πr^2h
V=3.142×4×4×6
V=301.63 units cube
 
        
             
        
        
        
When vinegar, an acid, is mixed with baking soda, a base, the reaction is similar to the reaction of Alka-Seltzer and water; a salt, water and carbon dioxide are produced. 
        
                    
             
        
        
        
Answer:
(a)Food-12%
9b)Transportation-17%
Step-by-step explanation:
In the Year 2000
- Average Household Income (before taxes)=$44,649
- Amount Spent on Food =$5,158
- Amount Spent on Transportation=$7,417
Therefore:
(a)Percentage of the average household income in 2000 was spent on food

(b)Percentage of the average household income in 2000 was spent on transportation

 
        
             
        
        
        
Answer:
x = 1
Step-by-step explanation:
Add 4 from both sides which you add to the zero. Then, combine like terms, 5x - 1x which is 4x. Divide 4 from both sides and it equals 1.