Answer:
the answers for those are number 4 is 150 and 5 is 16% 
Step-by-step explanation:
number 4     500 x 30= 15,000
15,000 ÷ 100= 150 
number 5   80 x 100=8,000
8,000÷ 500= 16 so 16% 
 
        
                    
             
        
        
        
Answer: The answer is C, and D.
 
        
                    
             
        
        
        
Answer:
x = 1
y = 30°
Step-by-step explanation:
is RS is ⊥ to TU then TS = US so we can use this equation to find 'x':
20x-3 = 5x+12
15x = 15
x = 1
we also know that RS intersecting with TU creates a 90° angle
if 3y = 90 then y = 30