In professional environments, accurately translating verbal instructions into mathematical models is essential for budgeting and logistics. Match each verbal phrase below with the algebraic expression that correctly represents the order of operations described.

An inventory manager is setting up a formula in a spreadsheet to calculate the total cost of an order. The manual provides the following instruction: 'eight times the sum of the product price ($x$) and the shipping fee ($y$).' Which algebraic expression correctly represents this instruction?

In a logistics spreadsheet formula, the phrase 'the sum of eight times the weight ($x$) and the shipping fee ($y$)' is correctly translated as the algebraic expression ${}8(x + y)$.

Translating Logistics Formulas

When translating the instruction 'eight times the sum of the unit price ($x$) and the shipping fee ($y$)' into an algebraic formula for a billing system, you must enclose the $x + y$ expression in ____ to ensure the addition is performed before the multiplication.