Answer:
d=2
Step-by-step explanation:
 
        
             
        
        
        
<u>Answer:</u> 
The number of tickets bought is 1000 adults tickets and 700 children were present  
<u>Explanation:</u> 
Let the number of children and adults present in the circus be x and y respectively
According to question,
Then, x + y = 1700  ……………..equation (1)
And, cost of ticket to circus for children and adult be 19, 42 respectively
Total cost of ticket; 
for adults = 42y; for children = 19x
19x + 42y = 55300  …………………equation (2)
Multiplying equation (1) by 19
19x + 19y = 32300  ……………… eqn (3)
Subtracting equation 1 and 3, we get
23y = 23000
y = 1000
putting this value in eq (1), we get x = 700
Therefore, 1000 adults and 700 children were present
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Mr. and Mrs. Bailey need to invest $2906.50 so as to send their son to college.
<h3>
Compound interest</h3>
Compound interest is given by:

where A is the amount after t years, P is initial amount, r is the rate and n is the times compounded per period
Given that n = 1, r = 9% = 0.09, A = $7500 t = 11. Hence:

Mr. and Mrs. Bailey need to invest $2906.50 so as to send their son to college.
Find out more on Compound interest at: brainly.com/question/24924853
 
        
             
        
        
        
Answer:
the total cost would be $15,900
Step-by-step explanation:
<em>hope this helped &  good luck <33</em>