What Are D and A₁ in the Following Arithmetic Sequence

question 125

Multiple Choice

What are d and a₁ in the following arithmetic sequence? ​
5, 10, 15,...
​

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Definitions:

Inadequate Oxygenation

A condition where the body or a region of the body does not receive sufficient oxygen to meet its needs.

Flap-like Structure

A physical formation resembling a flap, used to describe parts of organisms that can move back and forth or serve as a cover.

Larynx

The hollow muscular organ forming an air passage to the lungs and holding the vocal cords; commonly known as the voice box.

Coughing Up Blood

involves expelling blood or blood-streaked sputum from the lungs or airway through coughing, a symptom of various medical conditions.