There's an identity 
sec^2 x = 1 + tan^2 x
so here we have
sec^2 theta = 1 + (3/8)^2 =  73/64
sec theta =  sqrt 73 / 8  or  1.068 to nearest thousandth
        
             
        
        
        
Answer:
a) 100/15 = 6.6667 = 6  2/3
b) C = T( 6 2/3)
        = T (6 + 2/3)
      C  = 1T x 6  2/3
           = 6 2/3 T 
We can show T as time at end of equation or start of brackets
 
        
                    
             
        
        
        
Answer:
x=1
You solve for x by cross multyplying 
 
        
                    
             
        
        
        
Answer:
c
d
Step-by-step explanation: