Which statement is true about inverse functions? A) If a function f is one-to-one, then f has an inverse function f^-1.
B) In a one-to-one function, each x-value corresponds to only one y-value. and each y-value corresponds to only one x-value.
C) The graphs of f and f^-1 are reflections of each other about the line y = x.
D) All three statements are true.

b) 36

step-by-step explanation:

18 times 2 is 36

intensity of the vector is v= √37 ≈ 6.08 units and make angle ∡α ≈ 9.46° with east direction

step-by-step explanation:

required vector is consists of the two componentsvx= 2+4=6 units   and vy= 1 unit and vx ⊥ vywe will use pythagorian theorem to find intensity of the vector vv∧2 = vx∧2 + vy∧2 => v = √vx∧2 + vy∧2 = √6∧2 + 1∧2 = √36+1 = √37 ≈ 6.08 unitsthe angle ∡α between vector and east direction we wil find with tanαtanα = 1/6 => α = arc tanα = arc 1/6 => α ≈ 9.46°

hope this

i believe the correct answer is b.