To determine the total cost for four friends to get into the fair and ride "x" amount of rides, we need to consider two components:
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The cost for admission: Each person pays $5, and there are 4 friends, so the total admission cost is \(4 \times 5 = 20\).
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The cost for rides: Each ride costs $3, and if they ride "x" amount of rides, the total cost for rides will be \(3x\).
Now, we can combine these two costs to form the total cost:
\[ \text{Total cost} = \text{Admission cost} + \text{Rides cost} = 20 + 3x \]
To express this in terms of an algebraic expression, we can rewrite it as:
\[ 3x + 20 \]
This expression is equivalent to \(4(3x + 5)\) when simplified, but the most straightforward expression for the total cost is:
\[ 3x + 20 \]
Among the choices provided, however, we can rewrite it to fit the multiple-choice format. Since none of the options directly list \(3x + 20\), the closest and correctly represented form in terms of the total cost of admission and rides is:
\[ 4(x + 5) \]
Thus, the correct answer among the options provided is:
4(x + 5)