The answer is D. Translation
First, 1/2 of an hour is 30 minutes. Well, how many 30 minutes are in an hour? 2, because 2*30 = 60.
So Brenda finish 1/3 of the bracelet in 30 minutes. We would just do...
(1/3)*2 = 2/3
Brenda can finish 2/3 of a bracelet in 1 hour.
Angle 1 and 2 are <u>supplementary</u> angles.
