Given the phrase “the product of a number and 7”, we asked to find the possible variable expressions that Demarco could have written.
The product of two variables is the result you get when you multiply them together. If we use two variables "a" and "b", the product would give
[tex]a\times b=a\mathrm{}b=ab[/tex]
Therefore, the product of a number(n) and 7 would give;
[tex]n\times7=n.7=7n[/tex]
Answer: Option 3 & 4
