For this, we are just going to plug in -9 for every x and then solve the equation:
[tex] q(x)=7x^{2} -1 [/tex]
[tex] q(-9)=7(-9)^{2} -1 [/tex]
[tex] q(-9)=7(81)-1 [/tex]
[tex] q(-9)=566 [/tex]
Now we know that q(-9) is equal to 566.
