Which inequality represents "nine more than three times a number is greater than 21"
A. 9n > 21
B. 9 + 3 >21
C. 3n + 9 >21
D. 9n + 3 >21
My answer is C
Is this correct?
Yes, C.
Thank you Ms. Sue for checking this.
You're welcome Scrolan.
Nine more than three times a number 'y'.
Yes, your answer is correct.
To solve this problem, we need to break down the sentence "nine more than three times a number is greater than 21" into an inequality.
Let's start by assigning a variable to the unknown number. Let's say the number is "n".
We know that "nine more than three times a number" can be represented as "3n + 9".
Next, we know that this expression is "greater than 21". In mathematical terms, "greater than" is represented by the symbol ">". So, we can write the inequality as:
3n + 9 > 21
Therefore, the correct answer is option C, which represents the inequality 3n + 9 > 21.