Thank you for posting your question here at brainly. The answer to the above question is the first one in the choices which is 15. Below is the solution:
<span>
3x + 10 = 55
Subtract 10 from each side...
3x = 45
Divide by 3...
x = 15</span>
Question: <span>If a right circular cone intersects a plane that runs parallel to the edge of the cone, the resulting curve will be a(n)?
Answer: Parabola
HOPE THIS HELPS! ^_^</span>
By the polynomial remainder theorem, the remainder upon dividing

by

will be the value of

.
... | 1 ... -6 ... -4 ... -6 .... -2
3. | .. ... 3 ... -9 ... -39 .. -135
--------------------------------------
... | 1 ... -3 ... -13 . -45 .. -137
So you have

which means

.
Find the GCF of both numerator and denominator and then divide both the denominator and numerator by that and you will get the simplified fraction.