When Isabella left her house in the morning, her cell phone battery was partially charged. Let BB represent the charge remaining
in Isabella's battery, as a percentage, tt hours since Isabella left her house. The table below has select values showing the linear relationship between tt and B.B. Determine the percentage charge that Isabella's phone loses each hour.
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I assume you're revolving the region with those bounds about the x-axis, and supposed to find the volume.
Via the disk method,
Recall the half-angle identity for sine:
Via the disk method,
Recall the half-angle identity for sine:
