Question

use the functions: h(x)= -x-7f(x)= -x²+8x-11solve:h(8)-2 times f(3)

Answer 1

Solution

For this case we know that:

$h(x)=-x-7,f(x)=-x^2+8x-11$

And we want to find h(8) -2f(3) so we can do this:

$h(8)=-8-7=-15$

And:

$f(3)=-(3)^2+8(3)-11=4$

and finally:

$h(8)-2f(3)=-15-2(4)=-15-8=-23$

And the final solution would be -23