Write an algebraic expression for 4 less than the product of 2 and a number.

4-(2a)

the problem has all the correct numbers but it is written backwards

To write an algebraic expression for 4 less than the product of 2 and a number, you need to first define the number as a variable, let's call it "a".

Now, the product of 2 and a number can be represented as 2a. Since we want 4 less than this expression, we simply subtract 4 from 2a. Therefore, the algebraic expression is:

2a - 4