Will mark ! giving 15 points!

urgent needed asap ! look at the photo and answer the following !
correct answers only !

find the measure of angle b.

question 1 options:
90
180
120
60

find the length of segment bc.

question 2 options:
163.3
128.6
84.7
59.8

find the length of segment ba.

question 3 options:
163.3
128.6
84.7
59.8

Adrawer contains 12 identical white socks, 18 identical black socks and 14 identical brown socks. what is the least number of socks you must choose, without looking, to be certain that you have chosen two socks of the same colour?

Adoctor administers a drug to a 38-kg patient, using a dosage formula of 50 mg/kg/day. assume that the drug is available in a 100 mg per 5 ml suspension or in 500 mg tablets. a. how many tablets should a 38-kg patient take every four hours? b. the suspension with a drop factor of 10 ggt/ml delivers the drug intravenously to the patient over a twelve-hour period. what flow rate should be used in units of ggt/hr? a. the patient should take nothing pills every four hours. (type an integer or decimal rounded to the nearest hundredth as needed.)

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17