Solve the Problem. -The Number of People Who Ride the Subway Has Been

question 20

Multiple Choice

Solve the problem.
-The number of people who ride the subway has been decreasing at the rate of 20 per year. Assuming this trend continues, how much will the change in the number of people riding the
Subway be in 3 years?

• A)23
• B)40
• C)60
• D)63

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Definitions:

Gel Electrophoresis

A laboratory method used to separate mixtures of DNA, RNA, or proteins according to molecular size.

Restriction Enzymes

Proteins used by bacteria to cut DNA at specific sites, widely used in molecular biology for gene cloning.

Bacteria

Single-celled microorganisms that can exist either as independent organisms or as parasites, with some capable of causing diseases.