Concept explainers
To write: A mathematical expression for the quantity described verbally.
The required mathematical expression is
Given data:
The verbal expression states: ‘Income after a 3% drop in the current income of x dollars.’
Method/Formula used:
Convert verbal expression into mathematical expression by assume base value x or any other variable.
Calculations:
The given statement has two parts, (1) current income is $ x , (2) the income drops by 3%. The current income ‘ x’ dollar is the base number.
Denote the mathematical expression for income after drop by I that is a function of variable x . Then the expression I has the value,
Thus, the income x after drop by 3% is
Therefore, the mathematical expression
Chapter 1 Solutions
PRECALCULUS:...COMMON CORE ED.-W/ACCESS
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