Solve the problem.
-The weekly sales in thousands of items of a product has a seasonal sales record approximated by $\mathrm { n } = 71.69 + 18.3 \sin \frac { \pi \mathrm { t } } { 24 }$ ( $\mathrm { t }$ is time in weeks with $\mathrm { t } = 1$ referring to the first week in the year). During which week(s) will the sales equal 80,840 items?

Question

Quizplus · Accepted Answer

The sales will equal 80,840 items when $\mathrm { n } = 80.84$. Solving this equation for $\mathrm { t }$ gives $\mathrm { t } = 4, 20, 30, 47, 52$.

Solve the Problem n=71.69+18.3sin⁡πt24\mathrm { n } = 71.69 + 18.3 \sin \frac { \pi \mathrm { t } } { 24 }n=71.69+18.3sin24πt​

Solve the Problem $\mathrm { n } = 71.69 + 18.3 \sin \frac { \pi \mathrm { t } } { 24 }$