4x + 6 < -6 First, subtract 6 from both sides. / Your problem should look like: 3x < -6 - 6 Second, simplify -6 - 6 to -12. / Your problem should look like: 3x < -12 Third, divide both sides by 4. / Your problem should look like: x < Fourth, simplify to 3. / Your problem should look like: x < -3
$8.40 is the amount to be subtracted from the $42.00. If you multiply 20% (.20) by $42.00 you get $8.40. To get your final price subtract $8.40 from $42.00 to get you final answer. I hope that helps.