Solve the Problem. -By Switching Service Providers, a Family's Telephone Bill Decreased from Bill

question 143

Multiple Choice

Solve the problem.
-By switching service providers, a family's telephone bill decreased from about $50 a month to about $43. What was the percent of decrease?

• A)16.3%
• B)7%
• C)15%
• D)14%

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Definitions:

Difference

The state or quality of being unlike or dissimilar.

Radioisotopes

Isotopes of elements that are radioactive, used in medical diagnostics, treatment, and research.

Tracers

Substances used in medical and biological research to track the passage of substances through systems.

Biological Processes

Complex sequences of actions or changes happening in living organisms, necessary for their survival, growth, and reproduction.