Which expressions are equal to 4 when x = 7 and y = 2?

Choose all answers that are correct.

A.

x – y – 1

B.

x – (6 ÷ y)

C.

xy – 8

D.

x + y – 4

Question

Which expressions are equal to 4 when x = 7 and y = 2?

 

Choose all answers that are correct.
  
 
  


  

  A. 
 
x – y – 1
   
    


  

  B. 
 
x – (6 ÷ y)
   
    


  

  C. 
 
xy – 8
   
    


  

  D. 
 
x + y – 4

ssddss02 · Answer

I know one of them is A.  And I know C. and D. are not equal to 4 but I'm unsure about B.

texaschic101 · Answer

just a matter of subbing...x = 7 and y = 2

i will do first one..x - y - 1....7 - 2 - 1 = 4
for b, do the division first