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This equation shows how the cost of Ann's retirement party depends on the number of guests. $\newline$ $c = 2g$ $\newline$ The variable $g$ represents the number of guests, and the variable $c$ represents the cost in dollars. If there are $5$ guests, how much will Ann's retirement party cost? $\newline$ $\$$ $\_\_\_\_$

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Find a value using two-variable equations: word problems

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Q. This equation shows how the cost of Ann's retirement party depends on the number of guests.

\newline

c = 2g

\newline

The variable

g

represents the number of guests, and the variable

c

represents the cost in dollars. If there are

5

guests, how much will Ann's retirement party cost?

\newline

\$

\_\_\_\_

Identify guests: question_prompt: How much will Ann's retirement party cost for $5$ guests?
Plug in value: Step $1$ : Identify the value for $g$ . Since there are $5$ guests, $g = 5$ .
Calculate cost: Step $2$ : Plug in the value for $g$ into the equation $c = 2g$ . So, $c = 2 \times 5$ .
Calculate cost: Step $2$ : Plug in the value for $g$ into the equation $c = 2g$ . So, $c = 2 \times 5$ . Step $3$ : Calculate the cost. $c = 2 \times 5 = 10$ . So, the party will cost $\$10$ .

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