The total cost for Beck to attend the fair and go on 4 rides can be calculated as follows:
Cost of admission: $10
Cost of 4 rides: 4x
Total cost: $10 + 4x
Since we are not given the value of x, we cannot calculate the total cost. However, we know that each ride costs x dollars, so we can use this information to find the cost of each ride if we are given the total cost. Alternatively, if we are given the cost of each ride, we can find the total cost by substituting the value of x into the equation.
As the question does not provide any information about the value of x or the total cost, we cannot provide a specific answer to this question.