OG详解-OG6 数学1 Q7

The correct answer is 11. It’s given that the function f(x) = 14 + 4x represents the total cost, in dollars, of attending an arcade when x games are played. Substituting 58 for f(x) in the given equation yields 58 = 14 + 4x. Subtracting 14  from each side of this equation yields 44 = 4x. Dividing each side of this equation by 4 yields 11 = x. Therefore, 11 games can be played for a total cost of $58.