In a Certain City the Temperature $7\left(\mathrm{I}_{0} \mathrm{ul}\right)$ Hours After 7 A

question 41

Multiple Choice

In a certain city the temperature $7\left(\mathrm{I}_{0} \mathrm{ul}\right)$ hours after 7 A.M. was modeled by the function $T(t) =45+30 \sin \frac{\pi t}{12}$ Find the average temperature to three decimal places during the period from 7 A.M. to 7 P.M.

• A) \(59.099^{\circ} \mathrm{F}\)
• B) \(79.099^{\circ} \mathrm{F}\)
• C) \(64.099^{\circ} \mathrm{F}\)
• D) \(128.198 \mathrm{\circ} \mathrm{F}\)
• E) \(74.099^{\circ} \mathrm{F}\)

---

Definitions:

Cash Equivalents

Investments of a short duration that are easily turned into fixed cash amounts and carry minimal risk of varying in worth.

Interest Rate Changes

Interest rate changes refer to the fluctuation of the cost of borrowing money or the return on investment, directly affecting economic activities such as loans and savings.

December 31

The last day of the year, commonly used as the end date for annual financial statements and reports.

Cash Equivalents

Brief-duration investments that can be easily converted into specific cash amounts and are highly liquid.