Solve the Equation for Solutions Over the Interval [0 $[ 0,2 \pi )$

question 163

Multiple Choice

Solve the equation for solutions over the interval [0, $[ 0,2 \pi )$ ) . Write solutions as exact values or to four decimal places, as
appropriate.
-The weekly sales in thousands of items of a product has a seasonal sales record approximated by $\mathrm { n } = 84.77 + 17.9 \sin \frac { \pi \mathrm { t } } { 24 }$ ( $\mathrm { t }$ is time in weeks with $\mathrm { t } = 1$ referring to the first week in the year) . During which week(s) will the sales equal 93,720 items?

• A) week 4, week 20 , and week 52
• B) week 4 and week 47
• C) week 30 and week 47
• D) week 21 and week 30

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