Solve for :
$\frac{3x}{8}+12=\frac{1}{3}-2x$
$-\frac{81}{13}$
$\frac{43}{2}$
$-\frac{5}{7}$
$\frac{100}{21}$
$-\frac{280}{57}$
Define function as follows:
$f(x) = x^{3} -7 x$
Suppose the domain of fwere to be restricted so that f could have an inverse. Which of the following restrictions would not give f an inverse?
$x \in (9, 12)$
$x \in (0,3)$
$x \in (6,9)$
$x \in (3,6)$
None of the other responses gives a correct answer.