Its DBC, cause two is in that point so you just find the answer choice with those three letters in the right order.
11 is 110 for x and y
12 is 90 degrees for x and y
13 is also 90 degrees for x and y
Suppose f(x) is an even function. The range of g(x) = -3f(2x) is [-9, 3].
Suppose f(x) is an odd function. What is the range of 0.5f(x-3) is [-1.5, 0.5]