Suppose a Phone Number, Stored as a Ten-Character String (Of

question 20

Multiple Choice

Suppose a phone number, stored as a ten-character string (of digits only) called phoneNumber must be converted into a string that has parentheses around the area code. Which statement below will do that?

• A) String newNumber = "(" + phoneNumber.substring(3, 0) + ")";
• B) String newNumber = "(" + ")" + phoneNumber;
• C) String newNumber = "(" + phoneNumber.substring(1, 3) + ")" + phoneNumber.substring(3, 7);
• D) String newNumber = "(" + phoneNumber.substring(0, 3) + ")" + phoneNumber.substring(3, 10);

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Definitions:

Pka Values

Numerical values that measure the acidity of protons in molecules based on their ability to be donated in an aqueous solution.

Reagents

Substances added to a system to cause a chemical reaction or test if a reaction occurs.

Conversion

The process of changing or causing something to change from one form to another.

Standard Deviation

A measure of the dispersion or variability within a set of numerical data, indicating how far values are spread from the mean.