Answer: x = 11.5
Step-by-step explanation: Since the line bisects angle BAC, this means angles BAD and DAC equal each other.
To find what angle DAC equals, you divide 75 by 2, which equals 37.5
Then you set 37.5 equal to (3x+3) and solve for x.
37.5 = 3x+3
34.5 = 3x
11.5 = x
