Geoffrey spent 2 hours and 10 minutes studying for a test and 30 minutes working on a science project. how long did he spend doing homework?

The verbal translation for the difference of m and 7 increased by 15

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You need to solve a system of equations. you decide to use the elimination method. which of these is not allowed? 3x - 2y = 7 3x + 4y = 17 equation 1 equation 2