For which of the following function does e range contain both positive and negative values over the domain 3less then or equal to x less then or equal to 7? ( sorry i could do the sign so i just write it out hopefully u understand it )
I. f(x)= 3x-10
II. g(x)=2x-7/x-4
III. h(x)= 5x+9/x-6
A) I only
B) I and II only
C) I and III only
D) II and III only
E) I,II, and III

Question

anonymous · Answer

domain is 
$$3\leq x \leq 7$$ right?

anonymous · Answer

so for example the first one has range that contains positive and negative numbers because 
$$f(3)=-1$$ and 
$$f(7)=11$$

anonymous · Answer

yup yup

anonymous · Answer

$$g(x)=\frac{2x-7}{x-4}$$ certainly contains positive and negative values

anonymous · Answer

has a vertical asymptote at x = 4 and as you approach 4 from the left it goes to - infinity, from the right it goes to positive infinity, so it contains both positive and negative values

anonymous · Answer

exact same thing for the last one, so if i read the question correctly the answer is all three have positive and negative values. what kind of class is this for?

anonymous · Answer

SATclass

anonymous · Answer

yuck