Which expression means “12 decreased by the product of 9 and a number x"? 12 + 9x
9 - 12c
12 = x -9
12 - 9

12-9x

Step-by-step explanation:

Here, we want to write an algebraic expression from the given statement

Let us start with the product of 9 and a number x

What this mean is that we want to multiply 9 and x

That gives 9 * x = 9x

Now, 12 is decreased by this product means we are to subtract 12 from it

we have this finally as;

12-9x

it is b)

hope this : )

step-by-step explanation: