The bar graph summarizes the charge, in kilowatt-hours (kWh), a battery received each day for 15 days. 7 6! - 5 'o - 4 ~ - ~ 3 § 2 - z - 1 ~ I I I I I I 0 0 8 9 11 16 23 Charge (kWh) For how many of these 15 days did the battery receive a charge of 0 kWh?
Correct answer: D (parsed from the explanation — this source omits an answer key for this item)
Explanation
Choice D is correct. It’s given that the bar graph summarizes the charge, in kWh 15 kilowatt-hours ^ h, a battery received each day for days. The height of each bar in the bar graph shown represents the number of days the battery received kWh the charge, in , specified at the bottom of the bar. The bar for a charge of 0kWh 0kWh reaches a height of 6. Therefore, the battery received a charge of for 6 of these days. kWh Choice A is incorrect. This is the charge, in , that the battery received, not the number of days the battery received this charge. Choice B is incorrect. This is the 16 23kWh number of days the battery received a charge of either 8, , or . Choice C kWh is incorrect. This is the number of days the battery received a charge of 11 .
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