Answer:
5
Step-by-step explanation:
i think
Answer:

Step-by-step explanation:
move the terms with
to the left side of the equation:
add 3x to both sides

add 3x and 3x

move all term not containing
to the right side:
add 1 to both sides of the equation


divide each term by 6


simplify the fraction

Answer:
Step-by-step explanation:
infinite and no solutions
A 120 watt light-bulb is a 0.120 kilowatt light bulb.
In one hour, it uses 0.120 kilowatt-hour of energy.
If electrical energy costs $0.20 per kilowatt hour, then that light bulb costs
(0.120 kilowatt-hour / hour) x (0.20 dollar / kilowatt-hour) =
(0.120 x $0.20 / hour) =
$0.024 / hour = <span>2.4¢ per hour </span>