1 . 3x+3x+3x=

• A. $9^x$
• B. $3^{x+1}$
• C. $3^{3x}$
• D. $3^{x^3}$

Answer: Option B

Explanation:

2 . 3x+3x+3x=3n

• A. n + 1
• B. n + 2
• C. n - 1
• D. n -2

Answer: Option C

Explanation:

3 . 3x+3x+3x

• A. $9^x$
• B. $3^{3x}$
• C. $3^{x+1}$
• D. $3^{x-2}$

Answer: Option C

Explanation: