During the school year, Gianna usually keeps a regular sleeping schedule. She goes to bed at 9:15 p.m. and wakes up at 6:30 a.m. For how long does Gianna sleep on a school night? Express the answer in

During the school year, Gianna usually keeps a regular sleeping schedule. She goes to bed at 9:15 p.m. and wakes up at 6:30 a.m. For how long does Gianna sleep on a school night? Express the answer in hours and minutes.

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During the school year, Gianna usually keeps a regular sleeping schedule. She goes to bed at 9:15 p.m. and wakes up at 6:30 a.m. For how long does Gianna sleep on a school night…

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