Write an algebraic expression to model the unknown number problem.

the product of a number and fifteen

A 1-column table with 5 rows. Column 1 is labeled Multiplication Words with entries double, multiply, product, twice, times.

Which statements are true? Select that all apply.
You can replace ‘a number’ with a variable to represent an unknown value.
The product means the result of adding two numbers.
Product means the result of multiplying two numbers.
The coefficient is 15.
In algebraic notation, you can represent the product of a number and a variable by writing the number and variable next to each other.