A....if its wrong im sorry but i believe its a because you will do 4x4 and will get the sum of 16ft square 
        
             
        
        
        
Answer:
10 ball caps 
Step-by-step explanation:
In this question, we are trying to know the number of caps the manger would buy that would equate the cost at both companies.
How do we get this? 
Since we do not know the number of caps, let’s assign a variable. Let the number of caps that is required be x. Let’s now make some costings in terms of x. We proceed;
Company X charges $50 fee plus $7 per cap. Total amount company X will charge on x caps will be; $50 + $7(x) = $50 + $7x
Company Y will charge $30 plus $9 per cap. Total amount company Y will charge on x caps will be $30 + $9(x) = $30 + $9x 
We are trying to look at the value of x that will make both costs equal. What we do is to equate both costs.
30 + 9x = 50 + 7x 
We simply by taking like terms to the same sides 
9x-7x = 50-30
2x = 20
x = 20/2 = 10
 X = 10
So what this means is that manger has to buy 10 caps to have the same cost in both companies 
 
        
             
        
        
        
For this case we have the following trigonometric relationship:
 cos (y) = 8/13
 Clearing the value of and we have:
 y = Acos (8/13)
 Calculating the angle we have:
 y = 52.02012756 degrees
 Rounding off we have:
 y = 52.02 degrees
 Answer:
 the measure of angle and is:
 y = 52.02 degrees