What equation do you get when you solve for x: qx + rx = s?

a) q + r / s
b) q - r / s
c) s / q + r
d) s / q - r

What is the 12th term of b(n)=-4-2(n-1)

If you answer 2+2 you will get over 80 points

The graph of a function f(x)=(x+2)(x-4). which describes all of the values for which the graph is negative and increasing? all real values of x where x< -2 all real values of x where -2