The phrase "4 is multiplied by the sum of a number and 8" can be expressed mathematically as follows:

Let's denote the unknown number by $x$.

• "The sum of a number and 8" is written as $x + 8$.
• "4 is multiplied by" means you multiply 4 by this sum.

So, the expression is:

$4(x + 8)$

Would you like more details or have any questions?

Here are 5 related questions:

1. How would you expand the expression $4(x + 8)$?
2. What happens if you set $4(x + 8) = 24$? How do you solve for $x$?
3. What is the expression for 5 multiplied by the sum of a number and 3?
4. How do you write the product of 7 and the difference of a number and 2?
5. How would you factor the expression $4x + 32$?

Tip: When multiplying a number by a sum, remember to distribute the multiplication across each term within the parentheses.