Solve by the Substitution Method $$\begin{array} { c } x + y = 7 \\5 x + 5 y = 35\end{array}$$

question 28

Multiple Choice

Solve by the substitution method.
- $$\begin{array} { c } x + y = 7 \\5 x + 5 y = 35\end{array}$$

• A) \(( 0,0 )\)
• B) Infinite number of solutions
• C) \(( 7,5 )\)
• D) \(( 8 , - 1 )\)

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