Can someone please help me

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?

1. ∠1 is complementary to ∠2 and ∠3 is complementary to ∠2. subtraction property of equality 2. m∠1 + m∠2 = 90 and m∠3 + m∠2 = 90 substitution 3. m∠1 + m∠2 = m∠3 + m∠2 definition of complementary 4. m∠1 = m∠3 given

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.