$10$ pts possible

At what values of $x$ do the graphs of the functions

$f(x)=8x^2+5x+7$

and

$g(x)=7x^2+11x+34$

intersect?

$3$ and $-9$

$-3$ and $9$

$-3$ and $-9$

$3$ and $9$

$11$ of $22$

$1|2^{**}|3**|4**|5**|6|7**|8**|9**|10**|11**|12**|13**|14**|$

$16**|17**|18**|19**|20**|21**|22$