Translate this phrase into an algebraic expression.

Question

9 increased by twice a number
Use the variable n to represent the unknown number.

Answer 1

The phrase "9 increased by twice a number" can be translated into the algebraic expression:

$9+2n$

Here, $n$ represents the unknown number, and "twice a number" translates to $2n$. The phrase "increased by" indicates addition, leading to the complete expression.