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What value of x is in the solution set of –5x – 15 > 10 + 20x?

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

The ivring berlin learning center would like a possible net profit of $650,000 on its new resource manual it sells to schools. the fixed costs for producing the manual are $780,000 and the variable cost per package is $19.85. if the estimated unit sales are 1,250,000 units, what selling price unit should the ivring berlin learning center try?