Which equation matches the sentence?
Column A Column B
1.
Three less than 9 times a number is 21.
2.
The sum of 3 times a number and 9 is 21.
3.
The difference of 9 times a number and 3 is 21.
4.
Nine less than 3 times a number is 21.
A.
3n + 9 = 21
B.
9n – 3 = 21
C.
3n – 9 = 21

Question

Which equation matches the sentence?
Column A		Column B
1.
Three less than 9 times a number is 21.
 2.
The sum of 3 times a number and 9 is 21.
 3.
The difference of 9 times a number and 3 is 21.
 4.
Nine less than 3 times a number is 21.
A.
3n + 9 = 21
B.
9n – 3 = 21
C.
3n – 9 = 21

***[isuru]*** · Answer

I'll help  you for the first one..the rest is up to u :) 

  take the number as "n" 
      9 times the number = 9n 
  
three less than  9 times the number = 9n - 3 

three less than 9 times the number is 21 means 
            9n - 3 =21

anonymous · Answer

ok thanks

anonymous · Answer

so is the 2 one a.

***[isuru]*** · Answer

yes its "B" for the "1st" one . can u work the rest ? :)