Ray ce is the angle bisector of acd. which statement about the figure must be true?

mecd = mecb
mace = macd
ace dcb
ecd acd

We are given that ray CE is an angle bisector of angle ACD. With this, we have the equation,
mACE = mECD

Next, we look at the choices
mECD = mECB > This not possible since ray CD is between the two angles
mACE = mACD > This is still not possible since ray CE is between the two angles
mACE = mDCB > This is possible since angles ACE, ECD and DCB are complementary angles.
mECD = mACD > This is not possible since ray CE is between the two rays

The answer is the third option

(1/x + 1)^2 + 6 (1/x + 1) +5

It is 198,87032,750 + 375 = 33145 so, we take the 6% and we make it a decimal (0.6) and multiply that, then that is your answer