To show:
a. Voltage of 214 volts is acceptable.
Answer to Problem 144AYU
a.
Explanation of Solution
Given:
In other countries, normal household voltage is 220 volts. It is acceptable for the actual voltage to differ from normal by at most 8 volts. A formula that describes this is .
Calculation:
a.
Voltage of 214 volts is acceptable.
To show:
b. Voltage of 209 volts is not acceptable.
Answer to Problem 144AYU
b.
Explanation of Solution
Given:
In other countries, normal household voltage is 220 volts. It is acceptable for the actual voltage to differ from normal by at most 8 volts. A formula that describes this is .
Calculation:
b.
Voltage of 209 volts is not acceptable.
Chapter A.1 Solutions
Precalculus Enhanced with Graphing Utilities
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