Solve the System by the Substitution Method $$\begin{array} { l } x y = 56 \\x + y = - 15\end{array}$$

question 131

Multiple Choice

Solve the system by the substitution method.
- $$\begin{array} { l } x y = 56 \\x + y = - 15\end{array}$$

• A) \(\{ ( - 7 , - 8 ) , ( - 8 , - 7 ) \}\)
• B) \(\{ ( 7 , - 8 ) , ( 8 , - 7 ) \}\)
• C) \(\{ ( - 7,8 ) , ( - 8,7 ) \}\)
• D) \(\{ ( 7,8 ) , ( 8,7 ) \}\)

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Definitions:

Payment Arrangements

Agreements between two parties on how a debt will be paid back, often detailing the amount, frequency, and duration of payments.

Early Payment Discount

A discount offered by a seller to a buyer for paying an invoice ahead of the scheduled due date.

Purchase Discount

A deduction from the amount owed by a buyer to a seller, granted for paying an invoice early.

Early Payment Discount

This is a reduction in the invoice amount offered by a seller to a buyer in return for paying the bill before the scheduled due date.