exam Maths Puzzle Numerical Ability

a light bulb consumes 2400 watt-hours per day,how long does it take to consume 11200 watt hours

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exam Other Question

I am having trouble with this problem, will someone please help me!
Evaluate P(7,3)
Thank you so much, Tami
Graph the solution set: { 3x+2y>-6}
{2x-3y<6}