Answer: 375
Step-by-step explanation:
You need to multiply the cost of each notebook by how many notebooks the store wants to buy.
 
        
             
        
        
        
Well if you know the top and the bottom are equal and the two sides are equal. So just add them up
        
             
        
        
        
Answer:
2.3 dollars
Step-by-step explanation:
Given: 
Ratio table that shows the costs for different amounts of bird seed
To find: the unit rate in dollars per pound
Solution:
Amount (pounds)   5       10      15        20
Cost (dollars)         11.5   23    34.50    46
Here,

Therefore,

Cost of 10 pounds = 23 dollars
So, cost of 1 pound =  dollars
 dollars
 
        
             
        
        
        
Answer:
Step-by-step explanation: ???