There is an special app that you take a picture of the problem and it answers it for you and it is free
Answer:
BAC=15
Step-by-step explanation:
angle BOA= 180-30= 150
triangle BAO is
isosceles because it has two equal sides, radii of a circumference so the angles ABO=BAO=(180-150)/2=15
24 cause you can only fit 24 on a backsplah
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Every year he pay like 100$
Compounded gon to be half
Quarter 1.3%