Write a Formula for the General Term (The Nth Term) $$\mathbf { a } _ { \mathbf { n } }$$

question 103

Multiple Choice

Write a formula for the general term (the nth term) of the arithmetic sequence. Then use the formula for $$\mathbf { a } _ { \mathbf { n } }$$ to find $$a _ { 20 }$$ , the 20th term of the sequence.
-To train for a race, Will begins by jogging 14 minutes one day per week. He increases his jogging time by 4 minutes each week. Write the general term of this arithmetic sequence, and find how many whole weeks it takes for him to reach a jogging time of one hour.

• A) \(a _ { n } = 4 n + 10 ; 13\) weeks
• B) \(a _ { n } = 4 n + 14 ; 12\) weeks
• C) \(a _ { n } = 4 n + 10 ; 12\) weeks
• D) \(a _ { n } = 4 n + 14 ; 13\) weeks

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Definitions:

Deflection Waves

Components of an electrocardiogram (ECG) tracing reflecting the electrical activity of the heart, including various waves (P wave, QRS complex, T wave) associated with specific phases of cardiac depolarization and repolarization.

ECG

Electrocardiogram, a test that records the heart’s electrical activity and can be used to diagnose various heart conditions.

QRS Complex

A series of deflections in an electrocardiogram representing the electrical activity associated with the ventricular contraction of the heart.

P Wave

The waveform on an electrocardiogram (ECG) that represents atrial depolarization, preceding the contraction of the atria.