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Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

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

What is the measure of angle 1? a.28 b.152 c.168 d.64