Question

Question 4 of 10 For what value of x is the rational expression below equal to zero? (3x + 15)/(6 - x) A .5 B. -5 C. 6 D. -6

Answer 1

The question is what rational number for x would make

`(3x+15)/(6-x)\text{ = 0}`

We have

`\begin{gathered} (3x+15)/(6-x)=0 \\ \text{the numerator must be zero, for this to be zero., so} \\ 3x+15=0 \\ 3x=-15 \\ x=(-15)/(3)=-5 \end{gathered}`

So, x = -5 would make the expression zero.

Option B