Question

Which of the following is an expression for “doubling a number N and dividing by 3” ?

A)2+n/3
B)2n/3
C)n2/3
D)2/3n

Answer 1

B or C

Explanation:

Since the communitive property of multiplication states that A * B = B * A...

2n = n2.

2n is doubling n and /3 is dividing that number by 3.

Answer 2

1. Doubling a number means a number times 2, we don’t know that number so it’s considered 2n
1(in short words) n is a variable. N•2 = 2n.
2. Divide 2n by 3. This would mean 2n/3

It could be B or C HOWEVER the most formal way is B.
We always want the coefficient in front of the variable. You will see it in the future. Thanks to the multiplication property of equality, B & C will produce the same number. For example let n= 1

2•1/3= 2/3 ; this is with equation B
1•2/3= 2/3; this is with equation C

If your looking for two answers put B & C
If your looking for one answer put B
If it doesn’t say, then I’d recommend to be B .