The answer is B
Hope this helps;)
        
             
        
        
        
Answer:
2019.
Step-by-step explanation:
We have been given that for the years from 2002 and projected to 2024, the national health care expenditures H, in billions of dollars, can be modeled by  where t is the number of years past 2000.
 where t is the number of years past 2000. 
To find the year in which national health care expenditures expected to reach $4.0 trillion (that is, $4,000 billion), we will substitute  in our given formula and solve for t as:
 in our given formula and solve for t as:




Take natural log of both sides:





So in the 18.5 years after 2000 the expenditure will reach 4 trillion.

Therefore, in year 2019 national health care expenditures are expected to reach $4.0 trillion.
 
        
             
        
        
        
Answer:
5/8
Step-by-step explanation:
12+30+20+10 +8 =80 total marbles
12+30+8=50 red blue and black
50/80
5/8
 
        
             
        
        
        
Answer:
27
Step-by-step explanation:
because 6×4 is 24 and 24+3 =27
 
        
                    
             
        
        
        
Answer:
40 + 4x
Step-by-step explanation:
formula for perimeter:
( length * 2 )+(width * 2)
you know that the length and width will be increased by the same number so you can call that X.
((length + x)*2) + ((width + x) * 2)
then substitute length and width
((15+x)*2) + ((5+x)*2))
you can simplify this a bit more
30 + 2x + 10 + 2x
40 +4x
Goodluck with your schoolwork/homework!
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Sorry for any wrong answers or bad explanations.