Question

-4(j-6(j+k)); use j=-7, and k=-2

Answer 1

$f(j,k)=-4(j-6(j+k)\\\\f(-7,-2)=-4(-7-6(-7-2))\\\\f(-7,-2)=-4(-13-9)\\\\f(-7,-2)=-4(-22)\\\\f(-7,-2)=-88$