Which expression represents the phase below? 8 less than the product of 6 and a number, x

The statement is "8 less than the product of 6 and a number, x." "Less than" indicates subtraction - you will subtract 8 from a number. That number is "the product of 6 and a number, x." "The product" of these numbers will result with multiplication - you are multiplying 6 and x.

All this gives you the expression: 6x - 8.