During the summer, Rafael's Toy Shop collects data that implies a relationship between the weekly average temperature and the number of kites sold. Choose the correct equation for the least squares line. A. \( \mathrm{y}=0.248 \mathrm{x}-8.95 \) During a week with an average temperature of \( 64.1^{\circ} \mathrm{F} \), how many kites can Rafael expect to sell? \( 7 \mathrm{~T}^{\circ} \mathrm{kites} \) (Round to the nearest whole number as needed.) During a week in which Rafael sells 8 kites, what will be the approximate average temperature? \( \square^{\circ} \mathrm{F} \) ( F ) (Round to the nearest tenth as needed.)
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Bonus Knowledge
To find out how many kites Rafael can expect to sell at an average temperature of \( 64.1^\circ F \), we can plug this value into the least squares line equation. Substituting \( x = 64.1 \): \[ y = 0.248(64.1) - 8.95 \] Calculating that gives us: \[ y = 15.873 - 8.95 \approx 6.9 \] Rounding to the nearest whole number, Rafael can expect to sell **7 kites**. Now, to find the average temperature when 8 kites are sold, set \( y = 8 \) in the equation and solve for \( x \): \[ 8 = 0.248x - 8.95 \] Rearranging gives us: \[ 0.248x = 8 + 8.95 = 16.95 \] Now, divide both sides by \( 0.248 \): \[ x \approx \frac{16.95}{0.248} \approx 68.3 \] Thus, when Rafael sells 8 kites, the approximate average temperature will be **68.3°F**.
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