Answer:
Pasta: $2.39
Jar of tomato sauce: $3.09
Coupons(-): $0.75+$0.50
Total cost: $4.23
Step-by-step explanation:
The total cost of Barry's purchase is the addition of the cost of purchase of pasta and a jar of tomato sauce, and the value of coupons is reduced from the answer. It would be the final answer. 
 
        
             
        
        
        

-8400/68 simplifies to to -2100/17,  dolphins/year, so 2100 less dolphins every 17 years.
and we can just divide those to get the decimal amount of -123.53, which means, 123.53  less dolphins every year.
of course, there's no such a thing as 0.53 of a dolphin, so, we can say "about" 123 less dolphins per year.
 
        
             
        
        
        
Answer:
The answer is the second choice.
y=2^x+2 + 2
 
        
             
        
        
        
Answer: C
Step-by-step explanation: 8 (1/3) 16 (2/3) 24 (3/3)
 
        
             
        
        
        
the value of (-3)4+(-2)4×(-1)4 is -24