A multiplication is zero if and only if at least one of the factors is zero. So, in this case, the multipications equals zero when

The first equation has no real solutions, because
is a square, and thus it's positive. If you add 4 to a positive number, the result can't be zero.
The second equation has the solution

So, globally, the expression equals zero if and only if 
The function is always positive.
(0,5) is the y-intercept, since the graphed line never crosses the x axis, there is no x-intercept.
The function is positive and greater than 4 for all values of x
Not sure what the actual choices are on a couple of the questions. The choices would help answering.
Answer:
yards
Step-by-step explanation:
I’m here what do u need help with
Answer:
your answer would be y=3x+3
Step-by-step explanation: