Answer:
B 24
Step-by-step explanation:
3/5 is 54°
1/3 is 30°
54-30 = 24
3.6 * 10^(-3) is the scientific notation
did you read it? it said how much is left after 33 minutes of calling so subtract it from 42 then convert it into percentage then decimal there you gote your answer.(I think it was a little confusing to me then again i am in 7th grade)