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Mathematics 11 Online
OpenStudy (danieke):

Anna is going to play guitar in her school's annual concert. If she starts by practicing for one hour per day and increases the time by 30 minutes each day, how long will she practice on the seventh day? 140 minutes 210 minutes 240 minutes 300 minutes @triciaal

OpenStudy (firejay5):

Day 1 60 min day 2 60 min + 30 day 3 60 min + 30x2 and so on...

OpenStudy (triciaal):

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