IN: What happens next?

How to avoid uber cancellation fees 
Take note of when you requested the ride. 
The best way to avoid an uber cancellation fee is keeping track of time. If you don't cancel the uber in a timely fashion, you'll be charged a fee.

OUT: When you call your uber, take note of what time it is. If you choose to cancel, make sure you do within five minutes.

IN: What happens next?

How to measure dc offset 
Purchase a multimeter. 
A multimeter is a handheld device for measuring electrical current, resistance, or voltage. Multimeters are available in either digital or analog models, and can sport a variety of different features.

OUT: The important consideration when choosing a meter to measure dc offset is the lowest available voltage range. Because dc offset readings will be quite small (usually under 100 mv), you need a meter with a small range (sensitivity) so that the readings will register correctly.

IN: What happens next?

How to go green in your bathroom 
Use less running water in your bathroom. 
You can save multiple gallons of water daily by shutting off running water when performing certain daily tasks. Examples of ways you can use less water is to take quicker showers, and turn off the faucet while shaving or brushing your teeth.

OUT:
Install low-flow shower-heads and faucet aerators. These types of shower and faucet accessories will allow you to save thousands of gallons of water per year because they restrict heavy water-flow.