If P Dollars Are Invested at the End of Each $$n = \frac { \log \left[ \frac { A r } { P } + 1 \right] } { \log ( 1 + r ) } .$$

question 60

Multiple Choice

If P dollars are invested at the end of each year in an annuity that earns interest at an annual rate r, the amount in the account will be A dollars after n years, where $$n = \frac { \log \left[ \frac { A r } { P } + 1 \right] } { \log ( 1 + r ) } .$$ If $2,700 is invested each year in an annuity earning 15% annual interest, when will the account be
Worth $15,000?

• A)10.0 years
• B)5.6 years
• C)2.4 years
• D)-1.3 years
• E)4.3 years

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Definitions:

Negative Reinforcement

A behavioral principle where the removal of a negative stimulus strengthens a desired behavior.

Unpleasant Stimulus

A type of stimulus that is typically undesirable or uncomfortable, leading to negative reactions in individuals.

Positive Reinforcement

A process in behavior modification where a behavior is encouraged by rewarding it.

Flooding

a behavioral therapy technique used to treat phobias and anxiety disorders by exposing the patient to their fear at its most extreme intensity, without any gradual build-up.