ok, i want to find a thevinin equvilent so i can replace the circuit at the load with the thevinin equivalent. so i would end up with a voltage thevinin, thevinin resistance and the load. now i found the thevinin resistance to be 4k ohm. now i found the voltage at the load, thus thevinin voltage to be 8 volts. the max power through the load is when the load is equal to thevinin resistance which is 4k ohm. i calculated the max power transfered to be 16mW, but they got 4mW...where did i go wrong.