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Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?

Four individuals pool money together to start a new business and agree to split the profits equally. n invests $6,000, x invests $2,000, y invests $8,000 and z invests $4,000. if the profits for the first month were $100,000, y receives than if the profits were divided in proportion to how much they invested.

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2