Looking out for your money

Which is cheaper, turning off the air conditioner when leaving home or leaving it on 80?
Does a person really save that much driving say 70 instead of 75 on the interstate going say 400 miles?

this is actually2 questions from the financially chalenged:
1] on my cell phone i had been out of cotract for severl years but just paid the bill sometimes i would go 3 months behind no problem.in march to get a new phone i resigned the same contract , last week i paid $40.00/1mnth which left me 1 mnth behind with july billing being 2 mnths "no problm?" yesterday my phone was cut off???? did i mention att has had my $200.00 deposit for 4 years and now they will have it for atleast 1 more year.is this a means to use the new contract against me?
john adams

Robzilla, heres a money question for you:
Remember when there was "simple Interest", when you made a loan at the bank? Yea, neither do I. Somewhere along the line, our legislative leaders, at the behest of big banking, and special interest groups, allowed them to create "APR", annual percentage rates.
For example, a customer can borrow $200,000 dollars, and wind up paying back over $400,000. No one talks about this outrageous rate of return. The American people don't even realize what was done to them, and how they are being abused financially in this way.
My question: When did the change from simple interest change to APR, and which body of Government assisted in this change?
Moreover, exactly who, by name, were instramental in this change?

Robin, by the way, you are so straight forward, and tuff with the news, and on wrong doers, I had to nick-name you "Robzilla",

Hey Robin, I been rhinking about this nickname think, and I already gave Jack Cafferty the Nick name " Jackzilla", many months ago, si I'm thinking I can't use that one on you.
But what do you think about " RoBo Meade"? " The Meadelator"?

"The robinator"? "El RoBo"?

Anybody else got any Ideas?