Solution or how to calculate similar triangles?

Identify the function that contains the data in the following table: x     -2         0         2         3         5     f(x)     5         3         1         2         4     possible answers: f(x) = |x| + 1 f(x) = |x - 2| f(x) = |x - 2| - 1 f(x) = |x - 2| + 1

Sawsan recorded the favorite sport of students at her school. she surveyed 200 students. how many students chose tennis?

Five infinity stones cost $16.80. what is the price per infinity stone ?