SOLUTION: On Nov. 19, 1863, Abe Lincoln delivered the famous Gettysburg Address. The speech began "Four score and seven years ago,..." I am supposed to: 1.Write an expression to repres

Algebra ->  Customizable Word Problem Solvers  -> Evaluation -> SOLUTION: On Nov. 19, 1863, Abe Lincoln delivered the famous Gettysburg Address. The speech began "Four score and seven years ago,..." I am supposed to: 1.Write an expression to repres      Log On

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Question 95917: On Nov. 19, 1863, Abe Lincoln delivered the famous Gettysburg Address. The speech began "Four score and seven years ago,..."
I am supposed to:
1.Write an expression to represent four score and seven.

2.- Evaluate the expression. Name the property used in each step.
I don't get this. Please help. Thanks!!

Answer by bucky(2189) About Me  (Show Source):
You can put this solution on YOUR website!
According to the dictionary, a score is a group of 20 things. In this case, a score is 20 years.
.
When Lincoln said, "Four score and seven ..." he meant four groups of 20 years and seven more years
added to that amount. So Lincoln meant 4 times 20 years plus 7 additional years. In mathematical
form you can write this as:
.
(4*20) + 7
.
This is the expression that represents four score and 7.
.
You can evaluate this expression by using multiplication and addition. First you multiply
the 4 times the 20 and that result is 80. Next you add the 7 to 80 and you get the answer
as 87 years. So when Lincoln said, "Four score and seven years ...." he was saying,
"Eighty seven years ago ... "
.
Do you agree that "Four score and seven years" sounded better than "Seven dozen and 3 years"
or just plain "Eighty seven years???"
.
Hope this helps you to understand the problem a little more.