Answer:
Step-by-step explanation:
I think it increased by 20% I think or it’s 25% think 
 
        
             
        
        
        
The answer is 258 pennies
        
             
        
        
        
Answer: 21/100
Step-by-step explanation:
Number of green marbles = 21 
Number of blue marbles = 35 
Number of red marbles = 18
Number of yellow marbles = 26
Total number of marbles = 100
The probability of choosing a free marble will be:
= Number of green marbles / Tot number of marbles 
= 21 / 100
 
        
             
        
        
        
y = ( 3 * x ) - 2.
This is because the card costs for 3 $ and should be multiplied by the number of total cards she buys in that particular day. So 3 * x. 
Now as she has got a 2$ off coupon, whatever the total is she gets 2 dollars off on that price. So we will subtract 2 at that time. FInally all this summed up would be equal to y.