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Glencoe Math: Course 2, Volume 2 View details

1. Algebraic Expressions

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Exercise 26 Page 355

Evaluate the given expression for w=120.

4

Practice makes perfect

Let's consider the given expression. w/30 The expression represents the approximate number of quarts of blood in a person's body, where w is the person's weight in pounds. We are asked to find how many quarts of blood a 120-pound person has. To do so, we need to evaluate the expression for w= 120. Let's do it!

w/30

Substitute

w= 120

120/30

CalcQuot

Calculate quotient

4

We found that a 120-pound person has 4 quarts of blood.