So 
<span>20% of 18.50 = ____ </span>
<span>to get this you multiply </span>
<span>20% is .20 in decimal form </span>
<span>18.50 x .20 = $3.70 </span>
<span>so 20% is $3.70, which means the discount is $3.70 </span>
<span>so then you subtract $3.70 from the original price of 18.50 and you get </span>
<span>$14.80 which is your answer (:</span>
        
                    
             
        
        
        
Your answer is <span>–4.9t^2 + 15t + 1 = 0
Hope this helps.
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The option that represents the answers for 6, 8, 10, and 14 is the second option-   31, 41, 51, 71
<h3>Sequence and Series </h3>
From the question, we are to determine the option that represents the answer for pictures 6, 8, 10, and 14
In the given diagram, 
The first picture requires 6 matches 
The 2nd picture requires additional 5 matches 
the 3rd  picture requires additional 5 matches 
and so on
That is 
1 → 6 
2 → 6 + 5 = 11
3 → 11 + 5 = 16
4 → 16 + 5 = 21
5 → 21 + 5 = 26 
6 → 26 + 5 = 31 
7 → 31 + 5 = 36
8 → 36 + 5 = 41
9 → 41 + 5 = 46 
10 → 46 + 5 = 51 
11 → 51 + 5 = 56 
12 → 56 + 5 = 61
13 → 61 + 5 = 66
14 → 66 + 5 = 71
Hence, the option that represents the answers for 6, 8, 10, and 14 is the second option-   31, 41, 51, 71
Learn more on Sequence and Series here: brainly.com/question/10321751
#SPJ1
 
        
             
        
        
        
Answer:
1 student
Step-by-step explanation:
From the Vann diagram attached below,
Let x represent the number of students who took 3 subjects.
Therefore,
100 = (42-9-11-x)+11+x+9+10+(35-10-11-x)+(30-9-10-x)+20
100 = 22-x+11+x+9+10+14-x+11-x+20
100 = 97-2x
2x = 100-97
2x = 3
x = 3/2.
x = 1.5
x = 1 student
 
        
             
        
        
        
Answer:
im not sure but 
Step-by-step explanation:
A goes in C, C goes in D, D goes in A, and B goes in B.