4. The population of country A was 40 milion in the year 2000 and has grown continually in the years following. The population
P, in millions of the country t years after 2000 can be modeled by
the function P(C) = 40e0.027t, where i 20.
Which expression represents how many years it takes the
population to reach 50 million?
(3)
in (1.25)
0.027
(1) In (0027
(2) In (135)
(4) 0.0271n (1.25)

Statements reasons 1. ab ≅ cd; ad ≅ bc 1. given 2. ac ≅ ac 2. reflexive property 3. △adc ≅ △cba 3. ? 4. ∠dac ≅ ∠bca; ∠acd ≅ ∠cab 4. cpctc 5. ∠dac and ∠bca are alt. int. ∠s; ∠acd and ∠cab are alt. int. ∠s 5. definition of alternate interior angles 6. ab ∥ cd; ad ∥ bc 6. converse of the alternate interior angles theorem 7. abcd is a parallelogram 7. definition of parallelogram what is the missing reason in step 3?