Is 12/24 closer to 0, 1/2, 1 1/2, or 2?

The parabola opens: y=√x-4 (principal square root) up down right left

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

The frequency table shows the results of a survey comparing the number of beach towels sold for full price and at a discount during each of the three summer months. the store owner converts the frequency table to a conditional relative frequency table by row. which value should he use for x? round to the nearest hundredth. 0.89 0.90 0.92 0.96