Answer:
not sure if it's ryt but I think it's A
 
        
             
        
        
        
To find the area of the circle, you will use the formula for finding area of any circle. 
 The radius is half the diameter. 
A = pi x r^2
 3.14 x 13^2
A = 530.66 square units
 The area is 530.66 square units.
        
                    
             
        
        
        
B) c - 1/5c - 40 = 120
c- (original cost) - 1/5c (sale) - 40(coupon)= 120(final cost)
Hope that helps! :)
        
             
        
        
        
Answer:
5*10^1
Step-by-step explanation:
 
        
             
        
        
        
Answer:
25%
Step-by-step explanation:
As the given situation the parameters are below:-
Cost of each box = 3 pounds
Amount of cereal in each box = 160 g
now,
160 g of cereal = 100%
and
25% of 1 box of cereal = 25% of 160 g which is

As per the question,  it is mention that Jane need her idea to give the equal value of amount as Tim's idea, provided
160 g of cereal costs 3 pounds
and
1 g of cereal will cost
=  
40 g of cereal will cost 
So, the percentage of  the pound is of 3 pounds is 3 ÷ 4 ÷ 3 × 100
 the pound is of 3 pounds is 3 ÷ 4 ÷ 3 × 100
= 25%
Therefore as the situation, Jane need to decline the amount by 25% for the same amount as Tim's idea.