Answer:
13
Step-by-step explanation:
You want to isolate the variable 'y'.

Subtract 10 to both sides:

Divide -3 to both sides:
Using synthetic division, you can find the quadratic factor to be
.. 2x^2 -3x +1
That, in turn, factors as
.. (2x -1)(x -1)
So the complete factorization is
.. (2x -1)(x -1)(x +3)
and the zeros are confirmed by a graphing calculator to be
.. x = 1/2, 1, -3
Answer: b
Step-by-step explanation: